alert tcp $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET DELETED Known Facebook Iframe Phishing Attempt"; flow:established,to_client; content:"FB.IframeUtil.CanvasUtil"; nocase; content:"iframe_canvas"; nocase; distance:0; content:"action=|5C 22|http|3A|"; nocase; distance:0; content:"canvas_iframe_post"; nocase; distance:0; content:"onsubmit="; nocase; distance:0; reference:url,www.f-secure.com/weblog/archives/00002196.html; classtype:bad-unknown; sid:2013183; rev:4; metadata:attack_target Client_Endpoint, created_at 2011_07_04, deployment Perimeter, signature_severity Major, tag Phishing, updated_at 2019_07_26;)