As far back as September, security researchers discovered a "critical" bug in many HTC Android handsets that exposed users' WiFi credentials to any hacker who cared to look. The flaw affected recent devices like the Thunderbolt and EVO 4G all the way back to the Desire HD. The researchers promptly notified HTC, but the manufacturer waited a full five months before acknowledging the flaw publicly a few days ago. Sounds shady, perhaps, but HTC sent us a statement clarifyi