23andMe took 5 months to realize hackers had stolen data from customer accounts

• 23andMe found out it was hacked five months after it was breached, per a regulatory filing. 
• The DNA testing company said it was breached in May but didn't find out until October from Reddit posts.
• The firm reportedly blamed customers for the breach, saying they didn't update their passwords. 

23andMe customer accounts were breached by hackers last year, but it took the DNA testing company five months to detect the intrusion.

In a data breach notification filing last week, the company revealed that it only discovered the attack in October.