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The biggest cybersecurity and cyberattack stories of 2025
2025 was a big year for cybersecurity, with cyberattacks, data breaches, threat groups reaching new notoriety levels, and, of course, zero-day flaws exploited in breaches. Some stories, though, were more impactful or popular with our readers than others. This article explores 15 of the biggest cybersecurity stories of 2025. […]
ThreatsDay Bulletin: GhostAd Drain, macOS Attacks, Proxy Botnets, Cloud Exploits, and 12+ Stories
The first ThreatsDay Bulletin of 2026 lands on a day that already feels symbolic — new year, new breaches, new tricks. If the past twelve months taught defenders anything, it’s that threat actors don’t pause for holidays or resolutions. They just evolve faster. This week’s round-up shows how subtle shifts in behavior, from code tweaks to job scams, are rewriting what “cybercrime” looks like in
New GlassWorm malware wave targets Macs with trojanized crypto wallets
A fourth wave of the “GlassWorm” campaign is targeting macOS developers with malicious VSCode/OpenVSX extensions that deliver trojanized versions of crypto wallet applications. […]
RondoDox Botnet Exploits Critical React2Shell Flaw to Hijack IoT Devices and Web Servers
Cybersecurity researchers have disclosed details of a persistent nine-month-long campaign that has targeted Internet of Things (IoT) devices and web applications to enroll them into a botnet known as RondoDox.
As of December 2025, the activity has been observed leveraging the recently disclosed React2Shell (CVE-2025-55182, CVSS score: 10.0) flaw as an initial access vector, CloudSEK said in an
As of December 2025, the activity has been observed leveraging the recently disclosed React2Shell (CVE-2025-55182, CVSS score: 10.0) flaw as an initial access vector, CloudSEK said in an
NYC mayoral inauguration bans Flipper Zero, Raspberry Pi devices
New York City’s 2026 mayoral inauguration of Zohran Mamdani has published a list of banned items for the event, specifically prohibiting the Flipper Zero and Raspberry Pi devices. […]
Trust Wallet Chrome Extension Hack Drains $8.5M via Shai-Hulud Supply Chain Attack
Trust Wallet on Tuesday revealed that the second iteration of the Shai-Hulud (aka Sha1-Hulud) supply chain outbreak in November 2025 was likely responsible for the hack of its Google Chrome extension, ultimately resulting in the theft of approximately $8.5 million in assets.
“Our Developer GitHub secrets were exposed in the attack, which gave the attacker access to our browser extension source
“Our Developer GitHub secrets were exposed in the attack, which gave the attacker access to our browser extension source
DarkSpectre Browser Extension Campaigns Exposed After Impacting 8.8 Million Users Worldwide
The threat actor behind two malicious browser extension campaigns, ShadyPanda and GhostPoster, has been attributed to a third attack campaign codenamed DarkSpectre that has impacted 2.2 million users of Google Chrome, Microsoft Edge, and Mozilla Firefox.
The activity is assessed to be the work of a Chinese threat actor that Koi Security is tracking under the moniker DarkSpectre. In all, the
The activity is assessed to be the work of a Chinese threat actor that Koi Security is tracking under the moniker DarkSpectre. In all, the
Hackers drain $3.9M from Unleash Protocol after multisig hijack
The decentralized intellectual property platform Unleash Protocol has lost around $3.9 million worth of cryptocurrency after someone executed an unauthorized contract upgrade that allowed asset withdrawals. […]
RondoDox botnet exploits React2Shell flaw to breach Next.js servers
The RondoDox botnet has been observed exploiting the critical React2Shell flaw (CVE-2025-55182) to infect vulnerable Next.js servers with malware and cryptominers. […]