Twitter bans animated PNG files after online attackers targeted users with epilepsy
Twitter | December 23, 2019
Twitter is banning animated PNG image files (APNGs) from its platform, after an attack on the Epilepsy Foundation’s Twitter account sent out similar animated images that could potentially cause seizures in photosensitive people. Twitter discovered a bug that allowed users to bypass its autoplay settings, and allow several animated images in a single tweet using the APNG file format