(AP File Photo)
(AP File Photo)

It may be a good idea to change your Internet passwords, as a big security firm uncovers an apparent Russian hacking ring.

FOX News Radio's Rachel Sutherland reports:

More than a billion Internet passwords and user names are reportedly in the hands of Russian hackers.  Hold Security, a Milwaukee firm known for uncovering security breaches, says the hackers also obtained more than 500 million email addresses, as they plucked through more than 400-thousand websites.

Hold Security is not revealing which sites were affected, citing non-disclosure agreements and a reluctance to name companies whose sites may still be vulnerable.  The New York Times says an independent security expert confirmed the breach is authentic.

In Washington, Rachel Sutherland, FOX News Radio.