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Significant Cyber Incidents

Major breaches, ransomware attacks, and nation-state operations affecting businesses worldwide. Sourced from Cyber Scoop, The Record, SecurityWeek, DataBreaches.net and more.

📡 51 incidents tracked·🕐 Last refresh: May 5, 2026, 12:49 a.m. PT
Manufacturing

Latvian national involved with Karakurt and other ransomware gangs sentenced for his role in ransomware organization

From the DOJ’s press release: A Latvian national was sentenced today to 102 months in prison for his role in a major Russian ransomware organization that stole from and extorted over 54 companies. According to cour…

DataBreaches.netMay 4, 2026
Enterprise

‘Copy Fail’ is a real Linux security crisis wrapped in AI slop

The actively exploited defect could affect every mainstream Linux distribution built since 2017, but some researchers found Theori’s AI-generated disclosure unhelpful and lacking. The post ‘Copy Fail’ is a re…

Cyber ScoopMay 4, 2026
Healthcare

Medicare portal database exposed health providers’ Social Security numbers

Dan Diamond and Clara Ence Morse report: The Trump administration inadvertently exposed the Social Security numbers of health care providers in a database powering a new Medicare portal, The Washington Post found. The Ce…

DataBreaches.netMay 4, 2026
Enterprise

Cisco Moves to Acquire Astrix Security to Tackle Non-Human Identity Risks

The acquisition strengthens Cisco’s push into identity-centric security for AI and machine access. The post Cisco Moves to Acquire Astrix Security to Tackle Non-Human Identity Risks appeared first on SecurityWeek .…

SecurityWeekMay 4, 2026
Government

Summary of Court Approved Legal Notice for Pennsylvania State Education Association Data Incident Settlement

PHILADELPHIA, May 4, 2026 /PRNewswire/ — The following release was issued by RG/2 Claims Administration LLC, as Settlement Administrator. If Your Private Information Was Potentially Compromised in a Data Incident A…

DataBreaches.netMay 4, 2026
Manufacturing

Trellix Source Code Repository Breached

The cybersecurity firm’s investigation has not found any impact on its source code release or distribution process. The post Trellix Source Code Repository Breached appeared first on SecurityWeek .…

SecurityWeekMay 4, 2026
Education

Educational company Infrastructure reports cyber incident

By Saturday, Infrastructure’s chief information security officer Steve Proud confirmed that the hackers gained access to information about users at some educational institutions, including names, email addresses, student…

The RecordMay 4, 2026
Manufacturing

Forbes preliminarily agrees to pay $10 million to settle California wiretapping lawsuit

The preliminary settlement agreement, released on Thursday, said that Forbes has agreed to give users “greater notice” of its use of trackers and will add language to its website providing California residents with more …

The RecordMay 4, 2026
Education

A college student is suing a dating app that allegedly used her TikTok videos to target men in her dormitory

The woman’s lawyer told CyberScoop they believe the company edited her video to suggest she was a “friend with benefits” and intentionally geofenced it to men around her. The post A college student is suing a dating app …

Cyber ScoopMay 4, 2026
Legal

Ransomware group claims breach of pro-Orbán Hungarian media firm

Mediaworks confirmed the incident on Friday, warning that “a significant amount of illegally obtained data may have come into the possession of unauthorized persons."…

The RecordMay 4, 2026
Enterprise

Wiz ZeroDay.Cloud Event Reveals 20-Year-Old PostgreSQL Vulnerabilities

Researchers revealed 20-year-old PostgreSQL flaws at Wiz ZeroDay.Cloud event, exposing critical bugs in pgcrypto and prompting urgent patches for database security.…

HackreadMay 4, 2026
Enterprise

Cybersecurity M&A Roundup: 33 Deals Announced in April 2026

Significant cybersecurity M&A deals announced by Airbus, Cyera, Fortra, Palo Alto Networks, Silverfort, and Socket. The post Cybersecurity M&A Roundup: 33 Deals Announced in April 2026 appeared first on Securit…

SecurityWeekMay 4, 2026
Enterprise

DigiCert Revokes Certificates After Support Portal Hack

Hackers delivered malware via a customer chat channel, infected an analyst’s system, and accessed the internal support portal. The post DigiCert Revokes Certificates After Support Portal Hack appeared first on SecurityWe…

SecurityWeekMay 4, 2026
Government

Small Defense Firms Lack Network Data to Stop Nation-State Hackers, Analyst Says

Team Cymru’s Stephen Campbell warned that small US defense contractors are not well prepared to face cyber intrusions through edge devices…

InfoSecurityMay 4, 2026
Financial

Cyber-Secure Philanthropy: Tech Infrastructure for Global Donations

Secure philanthropy needs hardened payments, API security, and compliance controls to protect global donations from fraud and attacks.…

HackreadMay 4, 2026
Defence

Exploitation of ‘Copy Fail’ Linux Vulnerability Begins

CISA has added the bug to its KEV list, and Microsoft has observed limited exploitation, mainly associated with PoC testing. The post Exploitation of ‘Copy Fail’ Linux Vulnerability Begins appeared first on S…

SecurityWeekMay 4, 2026
Enterprise

Why data centers now belong on the critical infrastructure list

As AI drives deeper dependence across business, supply chains, and national security, the buildings that run the cloud are becoming critical infrastructure — and increasingly attractive targets. The post Why data centers…

Cyber ScoopMay 4, 2026
Manufacturing

7 Key Features That Make Secure Browsers Safer

Secure Browsers boost safety with tracking blocks, fingerprint protection, session control, and real-time threat defense against modern web attacks.…

HackreadMay 4, 2026
Enterprise

OpenAI Rolls Out Advanced Security for ChatGPT Accounts

Advanced Account Security provides stronger login methods, more secure account recovery, shorter sessions, and training exclusion. The post OpenAI Rolls Out Advanced Security for ChatGPT Accounts appeared first on Securi…

SecurityWeekMay 4, 2026
Enterprise

Over 40,000 Servers Compromised in Ongoing cPanel Exploitation

The attacks likely target CVE-2026-41940, a recently patched zero-day leading to administrative access. The post Over 40,000 Servers Compromised in Ongoing cPanel Exploitation appeared first on SecurityWeek .…

SecurityWeekMay 4, 2026
Government

OpenAI To Extend Cyber Program to Government Agencies

OpenAI announced its intention to expand the Trusted Access for Cyber program for cyber defenders at the federal, state and local government levels…

InfoSecurityMay 4, 2026
Education

Edtech Firm Instructure Discloses Data Breach Amid Hacker Leak Threats

Hackers disrupted services and stole names, email addresses, student ID numbers, and user messages. The post Edtech Firm Instructure Discloses Data Breach Amid Hacker Leak Threats appeared first on SecurityWeek .…

SecurityWeekMay 4, 2026
Enterprise

Instructure discloses second data breach in less than a year

Instructure defines itself as the “O.G. champions of open edtech. The makers of Canvas, Mastery, and Parchment (solutions for learning, assessment, and credentialing). Host of the world’s largest online commu…

DataBreaches.netMay 4, 2026
Government

US Military Reaches Deals With 7 Tech Companies to Use Their AI on Classified Systems

Google, Microsoft, Amazon Web Services, Nvidia, OpenAI, Reflection and SpaceX will provide resources to help augment warfighter decision-making in complex operational environments,” the Defense Department said. The post …

SecurityWeekMay 3, 2026
Financial

Paying Ransom Won’t Help as VECT 2.0 Ransomware Destroys Data Irreversibly

VECT 2.0 ransomware contains fatal flaws that permanently destroy files, making recovery impossible and rendering ransom payments useless for victims worldwide.…

HackreadMay 3, 2026
Enterprise

Google AppSheet Exploited in 30,000-User Facebook Phishing Operation

Scammers are abusing Google AppSheet and Google Drive to bypass security filters and steal thousands of Facebook Business accounts globally.…

HackreadMay 2, 2026
Enterprise

2 US Cybersecurity Experts Jailed for Aiding ALPHV (BlackCat) Ransomware

Two US cybersecurity experts jailed for aiding BlackCat ransomware group, extorting victims worldwide and exploiting insider access for profit.…

HackreadMay 2, 2026
Healthcare

Maryland pharmacist indicted on unauthorized computer access related to U. Maryland Medical Center

From the U.S. Attorney’s Office, District of Maryland: A Maryland man is facing federal indictment stemming from an unauthorized computer access scheme involving a Maryland medical system. Matthew Bathula, 41, of C…

DataBreaches.netMay 2, 2026
Government

Russian Hacker Known as “Digit” Pleads Guilty to Cyberattacks on Ukraine and the US

Anna Tkach reports: Russian hacker Artem Revensky has admitted to orchestrating cyberattacks targeting critical infrastructure in Ukraine, the United States, and several other nations. He now faces a potential sentence o…

DataBreaches.netMay 2, 2026
Enterprise

New Bluekit Phishing Kit Features AI Assistant

Still under development, Bluekit provides users with automated domain registration and an AI Assistant. The post New Bluekit Phishing Kit Features AI Assistant appeared first on SecurityWeek .…

SecurityWeekMay 2, 2026
Enterprise

45,000 Attacks, 5,300+ Backdoors Tied to China-Linked Cybercrime Operation

SOCRadar researchers have uncovered a massive Chinese cybercrime operation using the OpenClaw and Paperclip systems to automate global attacks.…

HackreadMay 1, 2026
Government

Michigan residents sue Thomson Reuters over public display of Social Security numbers

Caitlyn Rosen reports: A class of Michiganders asserted in a federal lawsuit filed Thursday that a Thomson Reuters search engine wrongfully published their Social Security numbers. In an 11-page lawsuit filed in the U.S.…

DataBreaches.netMay 1, 2026
Manufacturing

Hackers Use Jenkins Access to Deploy DDoS Botnet Against Gaming Servers

A new campaign shows misconfigured Jenkins servers abused to deploy a DDoS botnet targeting gaming systems, with Valve Corporation infrastructure in focus.…

HackreadMay 1, 2026
Government

US government, allies publish guidance on how to safely deploy AI agents

The guidance warns that agents capable of taking real-world actions on networks are already inside critical infrastructure, and most organizations are granting them far more access than they can safely monitor or control…

Cyber ScoopMay 1, 2026
Manufacturing

Senate Judiciary advances bill that would bar minors from interacting with AI companions

The bill, known as the GUARD Act, also requires that AI companions advise users of all ages that they are not human and lack professional credentials. It also makes it a crime for AI companions to knowingly ask kids for …

The RecordMay 1, 2026
Healthcare

NYSDFS Secures $2.25 Million Cybersecurity Settlement with Delta Dental

There is an update regarding the 2023 Delta Dental breach involving MOVEit software. Delta Dental was one of many customers whose patient data was exposed after Clop exploited a zero-day vulnerability to attack MOVEit an…

DataBreaches.netMay 1, 2026
Government

Federal agencies must patch cPanel bug by Sunday, CISA says

Incident responders at Rapid7 said successful exploitation of CVE-2026-41940 “grants an attacker control over the cPanel host system, its configurations and databases, and websites it manages.”…

The RecordMay 1, 2026
Manufacturing

Never forgotten.

In memoriam. Ayrton Senna, the greatest Formula One driver of all times, lost to this world on May 1, 1994 in a terrible crash at Imola. In the years following his death, some have matched or exceeded his record, but non…

DataBreaches.netMay 1, 2026
Enterprise

Anthropic Rolls Out Claude Security for AI Vulnerability Scanning

Claude Security enters public beta, giving enterprises AI driven code scanning with no API integration or custom agents required…

InfoSecurityMay 1, 2026
Manufacturing

Two American Cybersecurity Workers Jailed for BlackCat Ransomware Attacks

The cybersecurity workers used their knowledge and skills to conduct ransomware attacks for notorious gang, rather than protect victims against them…

InfoSecurityMay 1, 2026
Government

Unprecedented: Private Equity Firm Potentially on Hook for PowerSchool’s Data Breach

Tyler Bridegan, Scott Hyman, Patrick Strubbe, and Sarah Wilk of Womble Bond Dickinson write: In a first of its kind, a California federal judge allowed claims against Bain Capital to proceed based on a data breach at its…

DataBreaches.netMay 1, 2026
Enterprise

Nine-Year-Old Zero-Day Flaw in Linux Kernel Discovered by AI-Equipped Security Researcher

A researcher from offensive security firm Theori has found a nine-year-old flaw in the Linux kernel with the help of AI…

InfoSecurityMay 1, 2026
Enterprise

Former incident responders sentenced to 4 years in prison for committing ransomware attacks

Ryan Goldberg and Kevin Martin attacked five companies in 2023 and extorted nearly $1.3 million from one of their victims. The post Former incident responders sentenced to 4 years in prison for committing ransomware atta…

Cyber ScoopApr 30, 2026
Telecom

FCC tightens KYC rules for telecoms, closes loophole for banned foreign services

The commission wants telecoms to do more to verify their callers and prevent illegal calls and scams from reaching Americans. The post FCC tightens KYC rules for telecoms, closes loophole for banned foreign services appe…

Cyber ScoopApr 30, 2026
Enterprise

Congress kicks the can down the road on surveillance law (again)

It’s the second extension of Section 702 of the Foreign Intelligence Surveillance Act in 10 days, and a regular ritual for the Hill. The post Congress kicks the can down the road on surveillance law (again) appeared firs…

Cyber ScoopApr 30, 2026
Government

cPanel’s authentication bypass bug is being exploited in the wild, CISA warns

The agency added the flaw to the KEV list days after hosting providers confirmed active, ongoing attacks. The post cPanel’s authentication bypass bug is being exploited in the wild, CISA warns appeared first on Cyb…

Cyber ScoopApr 30, 2026
Enterprise

Three Arrested for Hacking Over 610,000 Roblox Accounts

Suspects accused of distributing malware and selling access to stolen Roblox accounts on Russian marketplaces…

InfoSecurityApr 30, 2026
Enterprise

Two new extortion crews are speedrunning the Scattered Spider playbook

CrowdStrike says The Com-affiliated threat groups are using voice phishing and fake SSO pages to break into SaaS environments and steal data fast for extortion. The post Two new extortion crews are speedrunning the Scatt…

Cyber ScoopApr 30, 2026
Enterprise

Deep#Door Python Backdoor Evades Detection On Windows

Deep#Door Python RAT uses tunneling and obfuscation to evade detection and steal credentials…

InfoSecurityApr 30, 2026
Manufacturing

CISA and Partners Publish Zero Trust Guidance For OT Security

A new CISA‑led guide explains how zero‑trust security can be applied to operational technology, balancing cyber defence with safety and system availability…

InfoSecurityApr 30, 2026
Critical Infrastructure

Everyone’s building AI agents. Almost nobody’s ready for what they do to identity.

Anthropic recently announced that it would not release Mythos, its most powerful AI model, to the public. The model discovered thousands of previously unknown software vulnerabilities — flaws that had sat undetected in m…

Cyber ScoopApr 30, 2026