Latest Internet & Cybersecurity News

๐Ÿ“…December 5, 2025 at 1:00 PM
Major cybersecurity incidents include critical React/Next.js vulnerabilities, global data breaches, and new AI-driven malware, with ongoing threats from China-linked groups and record-breaking DDoS attacks.
1

Critical React/Next.js Vulnerability CVE-2025-55182 Exploited

A critical vulnerability in React Server Components and Next.js allows unauthenticated remote code execution, with immediate patching required due to high exploitation risk. Security researchers warn of imminent in-the-wild attacks following public patch releases Source 4. China-linked threat groups are actively targeting this flaw in AWS environments Source 1.

2

Fintech Provider SitusAMC Breach Impacts U.S. Banks

SitusAMC, a major fintech vendor, disclosed a breach compromising corporate and customer data for over 1,500 clients, including several large U.S. financial institutions. The full scope is still being assessed, highlighting third-party risk in finance Source 2.

3

Comcast Fined $1.5M for Vendor Data Breach

Comcast will pay a $1.5 million FCC fine after a vendor breach exposed personal and financial data of nearly 275,000 customers. The incident affected 4.2 million people and mandates improved vendor oversight and compliance measures Source 2.

4

OpenAI Pauses Use of Analytics Vendor Mixpanel After Breach

OpenAI paused its use of Mixpanel after a breach exposed limited profile data for some API users. No passwords or sensitive content were compromised, but the incident raises concerns about third-party security in AI ecosystems Source 2.

5

Dozens of Banks and Credit Unions Hit by Third-Party Breach

A marketing vendor breach compromised sensitive data of at least 400,000 bank and credit union customers, including names, contact details, and account information. Affected institutions were notified in late October Source 2.

6

Freedom Mobile Data Breach Exposes Customer Information

Freedom Mobile disclosed a breach affecting its account management platform, with hackers stealing personal and financial information including names, addresses, and card numbers Source 1.

7

Record-Breaking Aisuru DDoS Attack Mitigated by Cloudflare

Cloudflare mitigated a new record-breaking Aisuru DDoS attack peaking at 14.1 Bpps, marking one of the largest attacks seen to date Source 1.

8

AI-Generated Linux Miner 'Koske' Surpasses Human Malware

The AI-generated Linux miner 'Koske' demonstrates capabilities matching or exceeding traditional human-developed malware, signaling a new era in automated cyber threats Source 3.

9

Cryptomixer Targeted in Operation Olympia

Law enforcement targeted Cryptomixer in Operation Olympia for facilitating cybercrime and money laundering, resulting in significant disruption to illicit financial activities Source 1.

10

Michael Clapsis Sentenced for Stealing Sensitive Information

Michael Clapsis was sentenced to 7 years and 4 months in prison for stealing sensitive information, highlighting ongoing legal actions against cybercriminals Source 1.