- Cloudflare Scrubs Aisuru Botnet from Top Domains List
For the past week, domains associated with the massive Aisuru botnet have repeatedly usurped Amazon, Apple, Google and Microsoft in Cloudflare's public ranking of the most frequently requested websites. Cloudflare responded by redacting Aisuru domain names from their top websites list. The chief executive at Cloudflare says Aisuru's overlords are using the botnet to boost their malicious domain rankings, while simultaneously attacking the company's domain name system (DNS) service.
- Alleged Jabber Zeus Coder ‘MrICQ’ in U.S. Custody
A Ukrainian man indicted in 2012 for conspiring with a prolific hacking group to steal tens of millions of dollars from U.S. businesses was arrested in Italy and is now in custody in the United States, KrebsOnSecurity has learned. Sources close to the investigation say Yuriy Igorevich Rybtsov, a 41-year-old from the Russia-controlled city of Donetsk, Ukraine, was previously referenced in U.S. federal charging documents only by his online handle "MrICQ." According to a 13-year-old indictment filed by prosecutors in Nebraska, MrICQ was a developer for a cybercrime group known as "Jabber Zeus."
- Aisuru Botnet Shifts from DDoS to Residential Proxies
Aisuru, the botnet responsible for a series of record-smashing distributed denial-of-service (DDoS) attacks this year, recently was overhauled to support a more low-key, lucrative and sustainable business: Renting hundreds of thousands of infected Internet of Things (IoT) devices to proxy services that help cybercriminals anonymize their traffic. Experts says a glut of proxies from Aisuru and other sources is fueling large-scale data harvesting efforts tied to various artificial intelligence (AI) projects, helping content scrapers evade detection by routing their traffic through residential connections that appear to be regular Internet users.
- Canada Fines Cybercrime Friendly Cryptomus $176M
Financial regulators in Canada this week levied $176 million in fines against Cryptomus, a digital payments platform that supports dozens of Russian cryptocurrency exchanges and websites hawking cybercrime services. The penalties for violating Canada's anti money-laundering laws come ten months after KrebsOnSecurity noted that Cryptomus's Vancouver street address was home to dozens of foreign currency dealers, money transfer businesses, and cryptocurrency exchanges — none of which were physically located there.
- Email Bombs Exploit Lax Authentication in Zendesk
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
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
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.
- In Other News: Controversial Ransomware Report, Gootloader Returns, More AN0M Arrests
Other noteworthy stories that might have slipped under the radar: rogue ransomware negotiators charged, F5 hack prompts OT security guidance, Germany targets Huawei tech. The post In Other News: Controversial Ransomware Report, Gootloader Returns, More AN0M Arrests appeared first on SecurityWeek.
- Landfall Android Spyware Targeted Samsung Phones via Zero-Day
Threat actors exploited CVE-2025-21042 to deliver malware via specially crafted images to users in the Middle East. The post Landfall Android Spyware Targeted Samsung Phones via Zero-Day appeared first on SecurityWeek.
- Radical Empowerment From Your Leadership: Understood by Few, Essential for All
When leaders redefine power as trust instead of control, teams unlock their potential — and organizations find their edge. The post Radical Empowerment From Your Leadership: Understood by Few, Essential for All appeared first on SecurityWeek.
- Data Exposure Vulnerability Found in Deep Learning Tool Keras
The vulnerability is tracked as CVE-2025-12058 and it can be exploited for arbitrary file loading and conducting SSRF attacks. The post Data Exposure Vulnerability Found in Deep Learning Tool Keras appeared first on SecurityWeek.
- ClickFix Attacks Against macOS Users Evolving
ClickFix prompts typically contain instructions for Windows users, but now they are tailored for macOS and they are getting increasingly convincing. The post ClickFix Attacks Against macOS Users Evolving appeared first on SecurityWeek.
- DOJ Antitrust Review Clears Google’s $32 Billion Acquisition of Wiz
Google’s acquisition of Wiz is expected to close in 2026, but there are other reviews that need to be cleared. The post DOJ Antitrust Review Clears Google’s $32 Billion Acquisition of Wiz appeared first on SecurityWeek.
- The Congressional Budget Office Was Hacked. It Says It Has Implemented New Security Measures
The Congressional Budget Office confirmed it had been hacked, potentially disclosing important government data to malicious actors. The post The Congressional Budget Office Was Hacked. It Says It Has Implemented New Security Measures appeared first on SecurityWeek.