TechCrunch looks back at the biggest data breaches, disruptive cyberattacks, and damaging hacks of 2025, from the raiding of U.S. government databases to a hack every month in South Korea.
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Microsoft moves to disable RC4 after decades of exploitation, implementing AES-SHA1 encryption, tools, and network protections for safer systems.
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The agency plans to renew a sweeping cybersecurity contract that includes expanded employee monitoring as the government escalates leak investigations and casts internal dissent as a threat.
Researchers discovered a new botnet called Kimwolf, allegedly built by the same brain behind AISURU.
Capable of creating “nearly perfect” face swaps during live video chats, Haotian has made millions, mainly via Telegram. But its main channel vanished after WIRED’s inquiry into scammers using the app.
U.K.-based healthcare tech provider DXS International said it discovered and contained a data breach on Sunday. A ransomware gang took credit for the breach.
The December 2025 Patch Tuesday update broke a few things – and the fix is not yet done.
Cl0p claimed to have breached LKQ, but the attack was confirmed only recently.
A poisoned Asus utility tool was found floating around the web, granting attackers abilities to “perform unintended actions”.
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