Gunners legend David Seaman hit out at Arsenal's back-line against Marseille, despite the clean sheet in Tuesday's 0-0 draw, after they gave away a number of chances.
Seaman said: "You look at it and still think it doesn't look that tight at the back. It was not convincing."
But Vermaelen fumed: "There is always criticism and complaining about Arsenal's defence. It does not hurt me at all.
"I am on the pitch to do my best. I am confident and don't care what people say.
"The most important thing is that we win games. And we have won eight from 10 and drawn one."