advanced persistent threats

A Chinese-state-sponsored cyberattack compromised the U.S. Treasury, gaining access to classified documents through a vulnerability through third-party cybersecurity provider BeyondTrust. The breach, revealed on Dec. 31, underscores the growing sophistication of state-backed cyber espionage efforts. “Treasury takes very seriously all threats against our systems, and the data it holds,” a department spokesperson said in a statement. “Over the last four years, Treasury has significantly bolstered its cyber defense, and we will continue to work with…