remove broken links

README.md

@@ -787,7 +787,7 @@ See also [el1t/uBlock-Safari](https://github.com/el1t/uBlock-Safari/wiki/Disable
 
 ## Other browsers
 
-Many Chromium-derived browsers are not recommended. They are usually [closed source](https://yro.slashdot.org/comments.pl?sid=4176879&cid=44774943), [poorly maintained](https://plus.google.com/+JustinSchuh/posts/69qw9wZVH8z), [have bugs](https://code.google.com/p/google-security-research/issues/detail?id=679), and make dubious claims to protect privacy.
+Many Chromium-derived browsers are not recommended. They are usually [closed source](https://yro.slashdot.org/comments.pl?sid=4176879&cid=44774943), [poorly maintained](https://plus.google.com/+JustinSchuh/posts/69qw9wZVH8z), and make dubious claims to protect privacy.
 
 Other miscellaneous browsers, such as [Brave](https://github.com/drduh/macOS-Security-and-Privacy-Guide/issues/94), are not evaluated in this guide, so are neither recommended nor actively discouraged from use.
 
@@ -1066,7 +1066,7 @@ Applications such as [BlockBlock](https://objective-see.com/products/blockblock.
 
 Locally installed **Anti-virus** programs are generally a double-edged sword: they may catch "garden variety" malware, but also may increase the attack surface for sophisticated adversaries due to their privileged operating mode. They also typically phone home to send samples in order to catch the newest malware. This can be a privacy concern.
 
-See [Sophail: Applied attacks against Antivirus](https://lock.cmpxchg8b.com/sophailv2.pdf) (pdf), [Analysis and Exploitation of an ESET Vulnerability](https://googleprojectzero.blogspot.ro/2015/06/analysis-and-exploitation-of-eset.html), [a trivial Avast RCE](https://code.google.com/p/google-security-research/issues/detail?id=546), [Popular Security Software Came Under Relentless NSA and GCHQ Attacks](https://theintercept.com/2015/06/22/nsa-gchq-targeted-kaspersky/), [How Israel Caught Russian Hackers Scouring the World for U.S. Secrets](https://www.nytimes.com/2017/10/10/technology/kaspersky-lab-israel-russia-hacking.html) and [AVG: "Web TuneUP" extension multiple critical vulnerabilities](https://code.google.com/p/google-security-research/issues/detail?id=675).
+See [Sophail: Applied attacks against Antivirus](https://lock.cmpxchg8b.com/sophailv2.pdf) (pdf), [Analysis and Exploitation of an ESET Vulnerability](https://googleprojectzero.blogspot.ro/2015/06/analysis-and-exploitation-of-eset.html), [Popular Security Software Came Under Relentless NSA and GCHQ Attacks](https://theintercept.com/2015/06/22/nsa-gchq-targeted-kaspersky/), and [How Israel Caught Russian Hackers Scouring the World for U.S. Secrets](https://www.nytimes.com/2017/10/10/technology/kaspersky-lab-israel-russia-hacking.html).
 
 ## Gatekeeper