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Winter-like conditions will be possible for middle Tennessee this weekend. A freeze warning is in effect for Friday and Saturday night. Temperatures will drop to around the freezing mark in Nashville and upper 20s outside the metro area. Saturday night will be even colder with temperatures dropping as low as the mid-20s outside the metro. Breezy NW winds will add to the chill. In addition to the cold, rain showers along the Cumberland Plateau will change over to light snow overnight.

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Expert Wants to Help Nab Russian Password Thieves

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LAS VEGAS (AP) -- The hackers are a tight knit group, 10 or 11. They live in a Russian town, and have real jobs. But in their down time, the cybercriminals have spent the past seven months gathering a hoard of personal data, stealing 1.2 billion user names and passwords in a series of Internet heists affecting 420,000 websites, according to Alex Holden, Chief Information Security Officer for Hold Security, whose firm uncovered the breach.

The Russian hackers had been collecting databases of personal information for years, but Holden told The Associated Press Wednesday that in April the group began deploying a new online attack technique that quickly shot from computer system to computer system as unwitting infected users visited random websites.

"Their cache of stolen goods grew quite quickly," said Holden, who has not revealed details about the websites that were breached or the names of other victims.

A native of Kiev who now lives in Milwaukee, Holden has conducted research that contributed to other exposures of major hacks, including a breach at Adobe that exposed tens of millions of customer records. He said he had been tracking the Russian criminals for seven months, but only was able to begin reviewing their massive cache of databases during the past few weeks. He timed his announcement to coincide with the annual Black Hat USA cybersecurity conference this week in Las Vegas, where it created quite a buzz.

Brian Krebs, who investigates online cybercrime and blogs about it, said his phone and email were inundated while he was at the conference Wednesday with people asking about Holden's announcement.

"Alex isn't keen on disclosing his methods, but I have seen his research and data firsthand and can say it's definitely for real," said Krebs. "Without spilling his secrets or methods, it is clear that he has a first-hand view on the day-to-day activities of some very active organized cybercrime networks and actors."

More than a day after his discovery was revealed in a New York Times report, Holden said he had not heard from any law enforcement agencies. He said he hopes investigators do contact him and added that his firm would be happy to cooperate.

To aid consumers, Hold Security plans to open a website in the coming days where people can search -free of charge- to see if their passwords and user names have been breached. The company is also offering a $10-a-month plan for businesses that want to be notified when a breach occurs.

Chase Cunningham, lead threat intelligence agent for cloud security company Firehost, spent years tracking Russian crime syndicates with the FBI and the NSA. At Black Hat on Wednesday, he said Hold Security has "uncovered one of the largest caches of data ever seen."

To date, Hold Security says it has only seen the Russian hackers use the personal data to spam social media, for example, hijacking a Twitter account and posting a weight loss ad. And Holden said he's only seen payments ranging from $200 to $1500 -although he's unsure if that's per person or for the entire group- for creating that spam.

Cunningham said he expects the Russian criminals will do much more with their illicit collection, which could prove lucrative.

"They can make money hand over fist with this," he said.

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