GOP Cries Censorship Over Spam Filters That Work
Sep 06, 2025 | Krebs on Security
The chairman of the Federal Trade Commission (FTC) last week sent a letter to Google's CEO demanding to know why Gmail was blocking messages from Republican senders while allegedly failing to block similar missives supporting Democrats. The letter followed media reports accusing Gmail of disproportionately flagging messages from the GOP fundraising platform WinRed and sending them to the spam folder. But according to experts who track daily spam volumes worldwide, WinRed's messages are getting blocked more because its methods of blasting email are increasingly way more spammy than that of ActBlue, the fundraising platform for Democrats.
18 Popular Code Packages Hacked, Rigged to Steal Crypto
Sep 08, 2025 | Krebs on Security
At least 18 popular JavaScript code packages that are collectively downloaded more than two billion times each week were briefly compromised with malicious software today, after a developer involved in maintaining the projects was phished. The attack appears to have been quickly contained and was narrowly focused on stealing cryptocurrency. But experts warn that a similar attack with a slightly more nefarious payload could quickly lead to a disruptive malware outbreak that is far more difficult to detect and restrain.
Microsoft Patch Tuesday, September 2025 Edition
Sep 09, 2025 | Krebs on Security
Microsoft Corp. today issued security updates to fix more than 80 vulnerabilities in its Windows operating systems and software. There are no known "zero-day" or actively exploited vulnerabilities in this month's bundle from Redmond, which nevertheless includes patches for 13 flaws that earned Microsoft's most-dire "critical" label. Meanwhile, both Apple and Google recently released updates to fix zero-day bugs in their devices.
Bulletproof Host Stark Industries Evades EU Sanctions
Sep 11, 2025 | Krebs on Security
In May 2025, the European Union levied financial sanctions on the owners of Stark Industries Solutions Ltd., a bulletproof hosting provider that materialized two weeks before Russia invaded Ukraine and quickly became a top source of Kremlin-linked cyberattacks and disinformation campaigns. But new data shows those sanctions have done little to stop Stark from simply rebranding and transferring their assets to other corporate entities controlled by its original hosting providers.
Self-Replicating Worm Hits 180+ Software Packages
Sep 16, 2025 | Krebs on Security
At least 187 code packages made available through the JavaScript repository NPM have been infected with a self-replicating worm that steals credentials from developers and publishes those secrets on GitHub, experts warn. The malware, which briefly infected multiple code packages from the security vendor CrowdStrike, steals and publishes even more credentials every time an infected package is installed.
Feds Tie ‘Scattered Spider’ Duo to $115M in Ransoms
Sep 24, 2025 | Krebs on Security
U.S. prosecutors last week levied criminal hacking charges against 19-year-old U.K. national Thalha Jubair for allegedly being a core member of Scattered Spider, a prolific cybercrime group blamed for extorting at least $115 million in ransom payments from victims. The charges came as Jubair and an alleged co-conspirator appeared in a London court to face accusations of hacking into and extorting several large U.K. retailers, the London transit system, and healthcare providers in the United States.
ShinyHunters Wage Broad Corporate Extortion Spree
Oct 07, 2025 | Krebs on Security
A cybercriminal group that used voice phishing attacks to siphon more than a billion records from Salesforce customers earlier this year has launched a website that threatens to publish data stolen from dozens of Fortune 500 firms if they refuse to pay a ransom. The group also claimed responsibility for a recent breach involving Discord user data, and for stealing terabytes of sensitive files from thousands of customers of the enterprise software maker Red Hat.
DDoS Botnet Aisuru Blankets US ISPs in Record DDoS
Oct 10, 2025 | Krebs on Security
The world's largest and most disruptive botnet is now drawing a majority of its firepower from compromised Internet-of-Things (IoT) devices hosted on U.S. Internet providers like AT&T, Comcast and Verizon, new evidence suggests. Experts say the heavy concentration of infected devices at U.S. providers is complicating efforts to limit collateral damage from the botnet's attacks, which shattered previous records this week with a brief traffic flood that clocked in at nearly 30 trillion bits of data per second.
Patch Tuesday, October 2025 ‘End of 10’ Edition
Oct 14, 2025 | Krebs on Security
Microsoft today released software updates to plug a whopping 172 security holes in its Windows operating systems, including at least three vulnerabilities that are already being actively exploited. October's Patch Tuesday also marks the final month that Microsoft will ship security updates for Windows 10 systems. If you're running a Windows 10 PC and you're unable or unwilling to migrate to Windows 11, read on for other options.
Email Bombs Exploit Lax Authentication in Zendesk
Oct 17, 2025 | Krebs on Security
Cybercriminals are abusing a widespread lack of authentication in the customer service platform Zendesk to flood targeted email inboxes with menacing messages that come from hundreds of Zendesk corporate customers simultaneously.
Email Bombs Exploit Lax Authentication in Zendesk
Oct 17, 2025 | Krebs on Security
Cybercriminals are abusing a widespread lack of authentication in the customer service platform Zendesk to flood targeted email inboxes with menacing messages that come from hundreds of Zendesk corporate customers simultaneously.
Patch Tuesday, October 2025 ‘End of 10’ Edition
Oct 14, 2025 | Krebs on Security
Microsoft today released software updates to plug a whopping 172 security holes in its Windows operating systems, including at least three vulnerabilities that are already being actively exploited. October's Patch Tuesday also marks the final month that Microsoft will ship security updates for Windows 10 systems. If you're running a Windows 10 PC and you're unable or unwilling to migrate to Windows 11, read on for other options.
DDoS Botnet Aisuru Blankets US ISPs in Record DDoS
Oct 10, 2025 | Krebs on Security
The world's largest and most disruptive botnet is now drawing a majority of its firepower from compromised Internet-of-Things (IoT) devices hosted on U.S. Internet providers like AT&T, Comcast and Verizon, new evidence suggests. Experts say the heavy concentration of infected devices at U.S. providers is complicating efforts to limit collateral damage from the botnet's attacks, which shattered previous records this week with a brief traffic flood that clocked in at nearly 30 trillion bits of data per second.
ShinyHunters Wage Broad Corporate Extortion Spree
Oct 07, 2025 | Krebs on Security
A cybercriminal group that used voice phishing attacks to siphon more than a billion records from Salesforce customers earlier this year has launched a website that threatens to publish data stolen from dozens of Fortune 500 firms if they refuse to pay a ransom. The group also claimed responsibility for a recent breach involving Discord user data, and for stealing terabytes of sensitive files from thousands of customers of the enterprise software maker Red Hat.
Feds Tie ‘Scattered Spider’ Duo to $115M in Ransoms
Sep 24, 2025 | Krebs on Security
U.S. prosecutors last week levied criminal hacking charges against 19-year-old U.K. national Thalha Jubair for allegedly being a core member of Scattered Spider, a prolific cybercrime group blamed for extorting at least $115 million in ransom payments from victims. The charges came as Jubair and an alleged co-conspirator appeared in a London court to face accusations of hacking into and extorting several large U.K. retailers, the London transit system, and healthcare providers in the United States.
Self-Replicating Worm Hits 180+ Software Packages
Sep 16, 2025 | Krebs on Security
At least 187 code packages made available through the JavaScript repository NPM have been infected with a self-replicating worm that steals credentials from developers and publishes those secrets on GitHub, experts warn. The malware, which briefly infected multiple code packages from the security vendor CrowdStrike, steals and publishes even more credentials every time an infected package is installed.
Bulletproof Host Stark Industries Evades EU Sanctions
Sep 11, 2025 | Krebs on Security
In May 2025, the European Union levied financial sanctions on the owners of Stark Industries Solutions Ltd., a bulletproof hosting provider that materialized two weeks before Russia invaded Ukraine and quickly became a top source of Kremlin-linked cyberattacks and disinformation campaigns. But new data shows those sanctions have done little to stop Stark from simply rebranding and transferring their assets to other corporate entities controlled by its original hosting providers.
Microsoft Patch Tuesday, September 2025 Edition
Sep 09, 2025 | Krebs on Security
Microsoft Corp. today issued security updates to fix more than 80 vulnerabilities in its Windows operating systems and software. There are no known "zero-day" or actively exploited vulnerabilities in this month's bundle from Redmond, which nevertheless includes patches for 13 flaws that earned Microsoft's most-dire "critical" label. Meanwhile, both Apple and Google recently released updates to fix zero-day bugs in their devices.
18 Popular Code Packages Hacked, Rigged to Steal Crypto
Sep 08, 2025 | Krebs on Security
At least 18 popular JavaScript code packages that are collectively downloaded more than two billion times each week were briefly compromised with malicious software today, after a developer involved in maintaining the projects was phished. The attack appears to have been quickly contained and was narrowly focused on stealing cryptocurrency. But experts warn that a similar attack with a slightly more nefarious payload could quickly lead to a disruptive malware outbreak that is far more difficult to detect and restrain.
GOP Cries Censorship Over Spam Filters That Work
Sep 06, 2025 | Krebs on Security
The chairman of the Federal Trade Commission (FTC) last week sent a letter to Google's CEO demanding to know why Gmail was blocking messages from Republican senders while allegedly failing to block similar missives supporting Democrats. The letter followed media reports accusing Gmail of disproportionately flagging messages from the GOP fundraising platform WinRed and sending them to the spam folder. But according to experts who track daily spam volumes worldwide, WinRed's messages are getting blocked more because its methods of blasting email are increasingly way more spammy than that of ActBlue, the fundraising platform for Democrats.
