A goal from Max Ehmer was enough to beat struggling Hartlepool and hand Graham Westley victory in his first game back in charge of Stevenage.
Charlie Wyke tested home keeper Steve Arnold early on while James Dunne went close for Boro with a header.
On-loan QPR defender Ehmer broke the deadlock 14 minutes from time when he latched on to a deflected effort and slotted past Scott Flinders.
Defeat leaves Pools eight points adrift of safety with four games remaining.
Westley was appointed for his third spell in charge at Stevenage last week following his sacking by Preston in January.
VIEW FROM THE DRESSING ROOM
Stevenage manager Graham Westley told BBC Three Counties Radio:
"Everybody at the club was pleased to see me back I think, that was the feeling I got, and the players put on a really strong performance.
"There's no easy games at this level and we knew that they'd come and give nothing away. We wanted to make sure that we didn't concede too many chances and we didn't.
"I didn't have any doubt about the players - I think they played with an intent, they played to win the game and they did exactly what they set out to do.
"We want to make sure going into next year that people are looking at Stevenage knowing they're a difficult side to play that usually wins its games."