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According to a report by the New York Times, the information regarding the infiltration and the subsequent federal investigation was provided by two individuals briefed on the matter. These sources requested anonymity, citing the sensitive nature of an ongoing federal investigation.<\/p>\n In a statement to the NYT, the company responded to questions about the hack and said: \u201cDuring the incident, a small number of Williams & Connolly attorney email accounts were accessed by leveraging what is known as a zero-day attack. Importantly, there is no evidence that confidential client data was extracted from any other part of our IT system, including from databases where client files are stored. We have taken steps to block the threat actor, and there is now no evidence of any unauthorized traffic on our network.\u201d<\/em><\/strong> Williams & Connolly, known for taking a strong stance in legal battles with the government, represents several well-known American politicians, including Bill and Hillary Clinton.<\/p>\n In recent days, the firm has sought to reassure clients, stating that, to its knowledge, the hackers do not intend to release or sell the information they have obtained. The company informed its clients that some lawyers\u2019 email accounts had been compromised and that the attackers may have accessed certain client communications.<\/p>\n Williams & Connolly has brought in cybersecurity firm CrowdStrike<\/a> and law firm Norton Rose Fulbright<\/a> to help address the consequences of the breach.<\/p>\n \u201cBased on the firm\u2019s investigation, conducted in conjunction with cyberexperts at CrowdStrike, the threat actor is believed to be affiliated with a nation-state actor responsible for recent attacks on a number of law firms and companies,\u201d<\/em><\/strong> the law firm noted.<\/p>\n Last month, cybersecurity firm Mandiant<\/a> reported that Chinese hackers had been running a long-term espionage campaign using zero-day vulnerabilities to gather intelligence from organisations such as law firms.<\/p>\n In its September report, the company said: \u201cSince March 2025, Mandiant Consulting<\/a> has responded to intrusions across a range of industry verticals, most notably legal services and software companies. Based on evidence from recent investigations, the targeting of the U.S. legal space is primarily to gather information related to U.S. national security and international trade.\u201d<\/em><\/strong><\/p>\n
\n The Federal Bureau of Investigation (FBI)<\/a> is currently investigating a large-scale cyber espionage<\/a> effort allegedly carried out by Chinese hackers<\/a>. According to reports, these hackers successfully infiltrated the computer systems of one of the country’s most prominent law firms<\/a>, Williams & Connolly<\/a>. The firm has reportedly notified its clients that its networks were compromised as part of a broader, sustained Chinese campaign targeting American legal practices. The FBI’s Washington field office is leading the investigation into the breach at Williams & Connolly and several similar attacks. Federal authorities suspect the same group of Chinese state-sponsored hackers is responsible for compromising the networks of more than a dozen other law firms and tech companies in recent months.<\/p>\nWhat US law firm Williams & Connolly said about the cyberattack<\/h2>\n
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