After three series successes, England relinquished their grip on the urn on Tuesday when Australia recorded a third consecutive Test victory in Perth to establish an unassailable 3-0 lead in the five-match series.
With Tests in Melbourne and Sydney still to come, England are at risk of a humiliating series whitewash, and Hussain wants Cook to stand up and be counted.
“This is now the hardest time of his career,” Hussain told Sky Sports. “Three-nil down, Australians want 5-0, his game is struggling, he’s got bowlers all over him like a rash, he’s got an opposition captain (Michael Clarke) that is out-captaining him.
“He’s often in the past come back in these situations. This will be the toughest for him.” Another former England captain, Michael Atherton, has urged Cook to view the situation as a chance to rebuild the team that he inherited from predecessor Andrew Strauss.
“Alastair Cook can look at this as a fantastic opportunity,” Atherton said. “He basically inherited Andrew’s side, a very good side, but it’s clear that this side is coming to the end of its time.
“How quickly the selectors will change, we don’t know. But he can view this now as a fantastic opportunity for him. To build a side of his own, to take forward, there’s 12 Test matches before the next Ashes series in 2015.”
England’s batsmen have struggled in Australia, with 22-year-old newcomer Ben Stokes the only player to have scored a century for the tourists after reaching 120 in England’s second innings in Perth.
England great Ian Botham laid the blame for England’s failure squarely at the feet of their batsmen. “The batters need to look at themselves,” said the former all-rounder.
“To lose the Ashes is a massive thing when you’ve had it for three years. Those Australian boys will celebrate long into the night and I hope they have a great night because they’ve worked hard.”