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Download "Browser Security - CompTIA A+ 220-1102 - 2.10"

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Table of contents
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Table of contents

0:03
Browser download and installation
0:49
Hash verification
2:14
Extensions and plug-ins
5:17
Secure connections
5:57
Enable pop-up blockers
6:35
Clearing private data
8:18
Ad blockers
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a+
220-1102
certification
comptia
free
professor messer
information technology
security
hash verification
browser extensions
malicious extensions
password managers
secure connections
pop-up blocker
private data
private browser mode
data synchronization
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  • ruRussian
Download
00:00:02
the first tip in our browser security
00:00:04
video is a best practice that can be
00:00:06
used for anything on your system and
00:00:08
that's to always use trusted sources
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when you're downloading and installing
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new software if an attacker wants to
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infect your system they'll add the
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malware to a browser extension and then
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you'll download the extension and enable
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it in your browser
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if you do need to install an extension
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for your browser don't install it from
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links that are in an email or from a
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third party website you should go
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directly to the browser developers
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website and make sure you download the
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extension directly from that site
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it's also a good idea to validate the
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hashes for any files that you downloaded
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to make sure that the hash on your
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machine matches the hash that's posted
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on the website
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if you've never checked the hash of a
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file it's a relatively easy process and
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there are applications available for the
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command line and the graphical front end
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that can help you with this process i
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used a program that was available in the
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microsoft store and installed that into
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my windows desktop so i wanted to
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download the latest distribution of
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ubuntu linux i went out to the ubuntu
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website where i could find the isos
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available to download and with those
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isos i also found sha256 sums these are
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the hashes for these iso files
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i then downloaded the live server
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amd64.iso
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and it has this long hash value that
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starts with echo 8 and ends in 2 delta
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4. i then started the hash checker
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program that i installed from the
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microsoft store and i had it check the
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hash for the iso that i downloaded and
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you can see the shot 256 is listed here
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at the bottom it starts with echo 8 it
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ends in 2 delta 4 and everything else in
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the middle matches the hash that was
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posted on the ubuntu website
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this means the file that is stored on my
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local machine is exactly the same as the
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file that is stored on the ubuntu
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website and i've now verified that i
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have exactly the same file as the ubuntu
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site
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when you're installing a new program or
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an extension to your browser onto your
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computer you have to make sure that
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you're installing it from a trusted
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website this might be the chrome web
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store or the microsoft store or any
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other third-party site where you really
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do trust the information that's on that
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site what you don't want to do is
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install software that comes from a
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third-party website or from links that
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appeared in your email any software you
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install could potentially have malware
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inside of it so installing from known
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good websites is always the best choice
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when installing new software
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the attackers know that it's very common
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for us to customize our browsers with
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extensions so they're going to make sure
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their malware is ready to go whenever
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you download that from an untrusted
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website
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this is a very practical concern because
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in march 2021 a study found that more
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than 24 google chrome extensions had
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malicious software inside of it this
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included 40 malicious domains and none
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of this was identified by the anti-virus
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anti-malware or other security software
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when these extensions were installed the
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researchers immediately found credential
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theft screenshots and key logging and
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data exfiltration once this software is
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on a system it effectively has the same
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control that any browser might have and
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was able to collect quite a bit of data
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from a susceptible machine
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as a good rule of thumb you should
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always have a healthy distrust of any
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software that you're installing and you
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should always keep very good backups in
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case you do happen to accidentally
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install some malware you can easily
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revert back to a clean configuration
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every website you visit tends to have
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some type of username password or other
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type of authentication and being human
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we tend to reuse a lot of these username
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and passwords when we go from site to
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site unfortunately that means if there's
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a breach with one website that means
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attackers now have credentials that
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you've used on many other websites as
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well one way to prevent this is to use a
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different password for every site you
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visit and one way to manage this process
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is through the use of a password manager
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or password vault this vault will keep
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track of all of the sites you visit it
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will provide different passwords for
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every site and it will make sure that
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all of that information is encrypted and
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stored on your machine some of these
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password vaults will also synchronize
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this information to the cloud so that
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you can have the same password vault
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across all of your systems using this
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password manager we can now have
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different passwords for every single
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site and the passwords themselves can be
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very strong and very difficult if
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someone was trying to perform a brute
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force attack there's many different
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types of password vaults available some
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that are perfect to use at home and
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others that are designed for use at work
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our browsers are actually quite good at
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identifying suspicious websites and if
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it does run across a problem with the
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communication it will give you a message
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telling you things like this connection
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is not private the browser is looking at
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the certificate on the web server and
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validating everything that's contained
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within that cert you can also look at
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these certificate details usually by
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clicking the lock that's inside of your
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browser and you could look to see
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whether the domain name is expired or
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maybe using the incorrect domain name
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maybe the certificate is not properly
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signed or signed by an untrusted
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certificate authority or maybe the time
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and date on your device is incorrect and
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that's causing a conflict with the
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certificate that's on the web server the
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example i'm using here is a certificate
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that is specifically incorrectly
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configured to provide examples of how
00:05:38
your browser might react and if you
00:05:39
would like to try this on your browser
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you can visit badssl.com
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when we look at the certificate details
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this clearly shows us in the browser
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that this is an untrusted root
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certificate authority which is why we're
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seeing the message that this site may
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not be trusted
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most browsers include a pop-up blocker
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that prevent a website from adding
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additional windows to your screen this
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is something that's usually enabled by
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default inside of your browser but you
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do have control on whether you'd like to
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turn that on or turn it off generally
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this is an option that should stay
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enabled but if you're troubleshooting a
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problem with a website you may need to
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temporarily disable it during the
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troubleshooting process there's many
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legitimate websites that use pop-up
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windows extensively so you may need to
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configure your browser to block pop-ups
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but enable them for certain websites and
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you can specify what those exceptions
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might be within the browser settings
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themselves
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our browsers collect a lot of data you
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can look through the history where
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you've been browsing you can look at any
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saved passwords and you can list all of
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the files that you may have downloaded
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inside of that browser but there may be
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times when you'd like to remove some of
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that data from the browser unfortunately
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you have the option within the browser
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to clear browsing data this might be
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your browsing history your download
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history any cookies and other site data
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and any images or files that may be
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cached inside of the browser this is
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usually one of the troubleshooting steps
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when you have an issue with a
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third-party website they'll ask you to
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delete all of your private data and then
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try to access the site again
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if you would like to limit how much
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information is being gathered from your
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browser you might want to start in a
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private browsing mode this is a mode
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that does not collect as much data as
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the normal browsing mode which is not
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only good for privacy but very good for
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troubleshooting these website issues
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when you close this private browsing
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mode a lot of the data that would
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normally be stored is deleted from your
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system there's no history information
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that's stored you don't have any data on
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what files may have been downloaded and
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anything that would have been in a cache
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is deleted so the next time you open a
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private browsing mode you're effectively
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starting with a clean slate which is
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perfect for troubleshooting
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some of the information we store in a
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browser is important especially if we're
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using browsers across multiple systems
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we may want to store bookmarks or store
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passwords that we can then use across
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any browser session fortunately many of
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these browsers can synchronize this
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information in the cloud so you can open
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up a browser in many different devices
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but still have access to all of your
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browsing history your favorites your
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bookmarks and anything else that you've
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stored in that browser session
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our browsers are getting quite good at
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blocking advertisements and other
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targeting information for example your
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browser may be able to hide the ip
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address you're using or prevent any
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tracking of where you go between
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websites this may or may not be how
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you'd like your browser to work some
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people like to visit a website and then
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have that website recognize them the
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next time they visit other folks would
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prefer to be private every time they
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visit a website on the internet
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fortunately you have a way that you can
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customize exactly the way the browser
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should operate especially in relation to
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ads in microsoft edge you have the
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option to set tracking prevention to a
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basic a balanced or a strict mode and
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then you can customize exactly the way
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the browser will react in each of those
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modes
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you

Description:

A+ Training Course Index: https://www.professormesser.com/free-a-plus-training/220-1102/220-1102-video/220-1102-training-course/ Professor Messer’s Course Notes: https://www.professormesser.com/220-1102-success-bundle/ - - - - - We rely on our browsers to protect us from many Internet-related security concerns. In this video, you’ll learn about hash verification, secure browser extensions, password managers, pop-up blockers, and more. - - - - - Subscribe to get the latest videos: https://www.youtube.com/user/professormesser?sub_confirmation=1 Calendar of live events: https://www.professormesser.com/calendar/ FOLLOW PROFESSOR MESSER: Professor Messer official website: https://www.professormesser.com/ Twitter: https://www.professormesser.com/twitter/ Facebook: https://www.professormesser.com/facebook/ Instagram: https://www.professormesser.com/instagram/ LinkedIn: https://www.professormesser.com/linkedin/

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