The Cherries, celebrating a century at their Dean Court ground, came into the game on the back of a five-match unbeaten run but were deservedly defeated by a resurgent Hartlepool.
Eddie Howe’s side started stronger, but it was to be Pools who broke the deadlock on the half-hour mark.
The impressive Brown – who just two minutes earlier has clipped the bar with a curling effort – cut in with ease from the left before firing home from long-range.
Just two minutes later the Cherries had a strong shout for a penalty turned down when Harry Arter clashed with Pools goalkeeper Jake Kean as he broke clear – but the frantic pleas of the Bournemouth players were ignored.
Bournemouth went close on a number of occasions in a disjointed second period – Anton Robinson driving into the side-netting and Jason Pearce firing over from close range – but Hartlepool held on for a hard-fought win.