145.5 million SSNs + name and addresses DoBs and in many cases driver's licenses and credit card numbers were compromised.
Equifax and the forensic security company hired determined it was impossible to confirm every SSN breached but apparently 145.5 million SSNs were in the databases breached.
Rough napkin math (based on census estimates) says there are around 200m people over the age of 18 in the US in 2017
That means around 3/4ths of the total adult population of the United States (including those with work visas etc) had their personal information compromised by Equifax.
If you exclude people that have never owned a home, rented a home, paid any sort of utility bill, car payment, credit card bill, rental property bill etc.. then that number starts looking very close to 100%.
