Overview

• People briefed on the matter say the FBI’s Washington field office is investigating this intrusion and related breaches tied to the same hackers.
• Hackers are suspected of targeting more than a dozen U.S. law firms and technology companies in recent months.
• Williams & Connolly says a small number of attorney email accounts were accessed via a zero‑day exploit.
• The firm retained CrowdStrike and Norton Rose Fulbright and says the threat actor is believed to be affiliated with a nation‑state.
• Williams & Connolly reports it has blocked the threat and seen no unauthorized network traffic, as Mandiant details a broader campaign collecting legal and trade intelligence.