The Gunners travel to Sheffield Wednesday in the Capital One Cup fourth round tonight (kick-off 7:45pm, Sky Sports 1) after four straight wins — over Manchester United, Watford, Bayern Munich and Everton.
“We need to keep focused on what we are doing well and it’s for sure that we have a lot of confidence and we want to show that we can get stronger and stronger,” Giroud said.
“If we carry on like that then we will be difficult to beat.”
Petr Cech will start in goal for Arsenal as David Ospina (shoulder) remains out.
The Gunners are firm favourites to advance but Owls boss Carlos Carvalhal believes an upset is possible.
He said: “All the expectation is on Arsenal...they can lose everything, we can win everything.”
Meanwhile, Arsenal have been fined £60,000 (€83,300) after breaching football agent regulations in the transfer of Calum Chambers from Southampton.
The Football Association also warned the Gunners over their future conduct following Chambers’ move from Saints on July 26, 2014 for an undisclosed fee believed to be in the region of £11m (€15.3m). Agent Alan Middleton was fined £30,000 (€41,600) and given a suspended three-month ban for his part in the same matter.
The written reasons for the sanctions described the incident as a case of “partial” fronting, where an unauthorised and unlicensed agent was involved.
A statement from Arsenal read: “We acted in good faith throughout in this transfer and had no reason to believe that the player’s representative was not authorised to be involved in the transfer negotiations. The FA fully recognised that there was no intention to mislead on Arsenal’s part.
“We have improved our procedures to prevent this happening again.”
Middleton was warned to his future conduct, sanctioned for breaching regulations, fined £30,000 (€41,600) and “suspended from all agency/intermediary activity for a period of three months”.
However, the ban is suspended for 18 months from October 23, 2015 “unless he commits an offence contrary to the agents regulations or the FA’s regulations on working with intermediaries during this time”, the FA said.