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What is ycaplugin.dll?

Part of Yahoo! Toolbar Anti-Spy Plug-In by Yahoo!

What is it?

Yahoo! Toolbar is a toolbar that installs on the Internet Explorer and Firefox browsers, within the context of internet access functions. It allows access to several functions, including Yahoo! Search and Yahoo! Mail. Several additional features are available on the Internet Explorer version.
Description of ycaplugin.dll from Yahoo!
The Yahoo Anti-Spy spyware scanner is an excellent addition. Our test showed it to be just as thorough as stand-alone scanners. It quickly scans your system and provides detailed information about any spyware or adware found. You can then easily remove what you want. With this new protection, Yahoo has definitely become the toolbar to beat.
Download Boost and enjoy your PC. Speed up Yahoo! Toolbar Anti-Spy Plug-In and optimize your PC.

How is ycaplugin.dll loaded?

Process Module - ycaplugin.dll is loaded as a DLL (dynamic link library) module within the process iexplore.exe (Windows® Internet Explorer by Microsoft Corporation) via run-time dynamic linking.
Yahoo! Toolbar Anti-Spy Plug-In is loaded by:


What is the community is seeing?What is the community is doing?
About 0.2% of all Boost users have the ycaplugin.dll file.Of the 0.2% of ycaplugin.dll users, 21.0% have disabled it.
Typical file (disk image) location:
C:\Program Files\Yahoo!\companion\Installs\cpn0\ycaplugin.dll

What else is related?

What Windows OS versions does this run on?

Windows XP Professional (5.1.2600.196608)

About Yahoo! Inc.

Yahoo was founded in 1994 by David Filo and Jerry Yang. It has since evolved into a major internet brand with search, content verticals, and other web services. More...
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File details

File name: ycaplugin.dll
Publisher: Yahoo! Inc. (verified)
Name: Yahoo! Toolbar Anti-Spy Plug-In
Description: Yahoo! Toolbar Anti-Spy Plug-In
Version: 2011, 3, 16, 01
Product version: 8, 3, 9, 18
Size: 119.8 KB
Original file name: YCAPlugin.dll

Digital certificate

Issued to: Yahoo! Inc.
Certificate authority: VeriSign
Effective date: 8/12/2009
Expiration date: 9/2/2012

Image hashes

MD5: 65f54beeb0c0b0386ea406fcbab8f83b
SHA-1: cd08a4c43bfde0393be4346e0a84b91b5823f989
SHA-256: 1b64baf036d9cbefa42ac2fc8bcbc053a05d35dcfcdb643cf23e93ded88c8310

PE image details

File entropy: 6.51550
File packed: No
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