Has Ubuntu been patched against the KRACK attack?
12206
How can I tell if a CVE has been fixed in Ubuntu's repositories?
46336
What antivirus program can I use on Ubuntu?
101847
How to prevent keyloggers / viruses on my system?
121501
How can I prevent McAfee Security Scan from being installed, bundled with other apps?
41360
A question about the last security update for Ubuntu ("ATTENTION: Due to an unavoidable ABI change...")
28705
Is there a Meltdown vulnerability fix already available for macOS?
75702
How (in)vulnerable would Ubuntu be to encryption ransomware?
92320
Are Snap and Flatpak apps safe to install? Are they "official", approved or tested for a particular distro version?
46584
How do I patch/workaround SSLv3 POODLE vulnerability (CVE­-2014­-3566)?
135555
Is Ubuntu's archive signing key available via HTTPS somewhere?
1771
How to get rid of 'security updates available' warnings?
20392
chkrootkit shows "tcpd" as INFECTED. Is it a false positive?
59771
Heartbleed: how to reliably and portably check the OpenSSL version?
38277
Ubuntu - saying your security settings have blocked an application from running with an out-of-date version of java
117457
Is there a way to permanently exclude the kernel from updates?
79471
How can I tell if my website is vulnerable to CVE-2014-3566 (POODLE)?
57032
How to patch the Heartbleed bug (CVE-2014-0160) in OpenSSL?