NCUA Letter to Credit Unions (24-CU-02) Board of Director Engagement in Cybersecurity Oversight
Dear Boards of Directors and Chief Executive Officers:
The frequency, speed, and sophistication of cyberattacks have increased at an exponential rate. Foreign adversaries and cyber-fraudsters continue to target all sectors of our nation’s critical infrastructure — including credit unions and other financial institutions. From September 1, 2023, the effective date of the NCUA’s cyber incident notification rule, through August 31, 2024, federally insured credit unions reported 1,072 cyber incidents. Seven out of ten of these cyber incident reports were related to the use or involvement of a third-party vendor.
A recent ransomware attack on a credit union has been attributed to “malvertising,” a relatively new cyberattack technique that injects malicious code within digital ads. For this type of attack to work, the user doesn’t even have to physically click on a link for the system to become infected. Instead, a simple internet search can result in malvertising that exploits the vulnerabilities in an internet browser. Credit union cybersecurity teams should focus on standardizing and securing web browsers and deploying ad blocking software to protect against this threat.
