One of my pet peeves is when UIs don't clearly constrain and delineate the extent of user-controlled text. Plenty of phishing attacks have relied on having atta

One of my pet peeves is when UIs don't clearly constrain and delineate the extent of user-controlled text. Plenty of phishing attacks have relied on having attacker-controlled input seem authoritative, e.g. getting gmail to repeat back something to the victim.