The Hacker News
The Hacker News is the official channel of one of the world's most-read cybersecurity publications. It puts out sector news quickly and rigorously: freshly disclosed vulnerabilities, data breaches, malware campaigns, urgent patches and threat analysis affecting companies and individuals alike.
It's near-essential reading for security professionals, system administrators and anyone who wants to hear about a critical flaw in time, before someone exploits it. The reporting is serious technical coverage, not sensationalism.
An important nuance so the name isn't misread: 'hacker' here means information security, not instructions for attacking anyone. The most useful thing is to use these alerts to protect yourself: if they publish a critical patch or a serious vulnerability, check whether it affects you and update as soon as you can. In security, staying informed is the first line of defence.