The company added that while it's still investigating how the information was compromised, it suspects it was due to an older hashing algorithm, SHA-256, which has since been updated. As ZDNet reports, Imgur didn't find out about the breach until the stolen data was sent to security researcher Troy Hunt, who then contacted the firm about it.

Roy Sehgal, Imgur's chief operating officer, said those who have been affected have already been informed. "We take protection of your information very seriously," he wrote, "and will be conducting an internal security review of our system and processes." Hopefully his team can figure out how this incident went unnoticed for roughly three years.