LifeLock shares were battered on Tuesday afternoon after the Federal Trade Commission claimed the company violated the terms of a 2010 settlement over deceptive advertising.
After two separate trading halts, the stock resumed trading around 2:45 p.m. ET. It closed 49 percent lower.
The 2010 order alleges LifeLock used false claims about its identity theft protection services. In court documents filed in Arizona on Tuesday, the FTC alleges LifeLock did not meet the obligations of its settlement and asks the company to compensate affected customers.