On May 27, 2015, the Syrian Electronic Army (SEA) tweeted a picture from a recent interview given by Jabhat Al-Nusra leader Abu Muhammad Al-Joulani, and mocked him for wearing a head covering to disguise his identity, referring to it as a "Hijab."
For more on the SEA, see MEMRI Inquiry & Analysis Series Report No. 1009, Syrian Electronic Army Uses Social Media - Twitter, YouTube, Facebook, Instagram, Google+, Pinterest, Smartphone Apps - To Communicate, Spread News Of Its Hacks And Its Mission, And Recruit Volunteers, August 19, 2013.
Source: Twitter.com/Official_SEA16, May 27, 2015.