The 2017 Equifax breach involved at least 9,000 queries to 51 databases over a period of 76 days, according to a report on the attack issued by the Government Accountability Office. The report details the mechanisms used by the attackers to gain access and exfiltrate personal information of approximately 145 million individuals in the US, Canada, and the UK. The attackers were careful to take data out of the databases in small chunks to avoid detection, using an outdated certificate in a dispute-resolution server to encrypt the data.”]