In November 2013, Chrome began blocking nearly all plug-ins written in the decades-old NPAPI (Netscape Plug-in Application Programming Interface) architecture.
And Apple regularly updates its block list of outdated Java and Flash plug-ins used by Safari, a practice begun in 2012.
Microsoft will update IE to block out-of-date Java ActiveX controls on Aug. 12, its monthly "Patch Tuesday," the day it issues security updates for Windows, IE, Office and its other software.
After an Aug. 12 update, Internet Explorer versions 8 through 11 on Windows 7 and Windows 8 will pop up warnings when an outdated version of the Java ActiveX control is called up by a Web page. (Image: Microsoft.)