Daily Briefing for 05.04.26

Attacks, Threats, and Vulnerabilities

CISA says ‘Copy Fail’ flaw now exploited to root Linux systems (BleepingComputer) CISA has warned that threat actors have started exploiting the "Copy Fail" Linux security vulnerability in the wild, one day after Theori researchers disclosed it and shared a proof-of-concept (PoC) exploit.

Lazarus Targets macOS Users With New “Mach-O Man” Malware Kit (GB Hackers) Lazarus Group is abusing “ClickFix” social engineering to push a new macOS malware kit dubbed “Mach-O Man,” giving attackers a direct path to credentials, Keychain secrets, and corporate access in fintech and crypto environments.

Legislation, Policy, and Regulation

US Military Reaches Deals With 7 Tech Companies to Use Their AI on Classified Systems (SecurityWeek) 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.

What Was Discussed at Google’s White House Meeting About A.I. (New York Times) The technology giant met with administration officials last week to address a growing concern in Washington: insufficient computing power for artificial intelligence.

For a complete running list of events, please visit the Event Tracker.

Events

CyberArk IMPACT 2026 (Austin, Texas, USA, May 11 - 13, 2026) At CyberArk IMPACT, cybersecurity practitioners and leaders will come together to explore today’s #1 attack vector – identity. Attendees will acquire a deep understanding of the latest developments in identity-based cyberattacks, including sophisticated attacker techniques that leverage AI and other methods. And most importantly, they will learn how to shut out attackers and prevent unauthorized access by securing every identity across the organization with the right level of privilege controls.

VeeamON 2026: Data & AI Trust Converge for the Agentic Era (Virtual and New York, New York, USA, May 12, 2026) VeeamON Online broadcasts the NYC keynote and select breakout content live and on demand. You’ll hear directly from the teams building the platforms, the customers operating at scale, and the leaders navigating real-world AI risk.

KB4-CON 2026 (Orlando, Florida, USA, May 12 - 14, 2026) Since its inception in 2018, KB4-CON has evolved from a user-focused gathering to the must-attend event for anyone serious about staying ahead in the security landscape. It is the human risk management industry’s premier event, bringing together KnowBe4 customers, channel partners, prospects, plus security advocates and industry professionals. This is your exclusive opportunity to engage with and learn from the industry’s most influential players, all under one roof.

ASCEND 2026 (Washington, DC, USA, May 19 - 21, 2026) ASCEND connects the civil, commercial, and national security space sectors, along with adjacent industries, to embrace the opportunities and address the challenges that come with increased activity in space. Building our sustainable off-world future requires long-term thinking. Strategic planning, innovation, scientific exploration, and effective regulations and standards will help us preserve space for future generations. ASCEND will enable the technical exchanges, debates, and collaboration that will help forge a sustainable off-world future for all.