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StopBadware cultivates a network of individuals and organizations that share a common goal of eliminating viruses, spyware, and other bad software. We connect the members of this network with actionable knowledge they can use to fight badware effectively.

By fighting badware, StopBadware and its constituents are helping to build a world in which people are the masters of their own machines. In this world, we each make informed decisions about how and when our hardware, software, and network connections are used.

More information about StopBadware can be found on our website.

This project is sponsored in part by Google, Mozilla, and Paypal. 

Our Work 28

Sep 28, 2010

Keeping the Net healthy

StopBadware Bay Area event October 4

Our friends at are having a conversation about Net security -- an Immune System for the Internet? -- with Vinton Cerf, Paul Mockapetris and Esther Dyson! at the…

Jan 25, 2010

StopBadware spins off as a standalone non-profit!

The Berkman Center is pleased to share the news that our anti-malware project, StopBadware, is now a non-profit of its own. This is an exciting step for our StopBadware colleagues…

Jan 25, 2010


Google, PayPal, Mozilla support non-profit anti-malware organization

StopBadware, an anti-malware effort started at Harvard University’s Berkman Center for Internet & Society, announced today that it has begun operating as a standalone non-profit…

Jun 30, 2009

StopBadware: New partner, new site reports

From the StopBadware blog: "We’re very pleased to announce that, as of today, Sunbelt Software has joined Google as a data partner, providing updated data about badware websites…

Jun 30, 2009, Sunbelt Software partner to fight badware

New Data Will Allow Broader Reach, Richer Analysis

CAMBRIDGE, Mass. —, the collaborative initiative to combat viruses, spyware, and other bad software, announced today that Sunbelt Software, developer of the…

May 29, 2009

President Obama addresses nation on cyber security

StopBadware manager Maxim Weinstein cheers the new administration's escalation of cyber security -- including badware prevention -- to a national priority...

May 19, 2009

Anti-Spyware Coalition public meeting

Maxim Weinstein, manager of Berkman's StopBadware project, is facilitating a panel today at the annual public workshop of the Anti-Spyware Coalition in Washington, DC. The theme…

Mar 31, 2009

Conjuring Conficker and GhostNet

malware in the news

Stories about the Conficker worm have been spreading, worm-like, through both online and offline media, while the Citizen Lab at the University of Toronto has documented an…

Mar 23, 2009

Berkman selected as Google Summer of Code mentoring organization

From March 23 - April 3, students can apply to work with Berkman as Summer of Code participants.

Mar 17, 2009


Join the fight against viruses, spyware, and other malicious software

The Berkman Center is pleased to announce the full launch of, an online community for people looking for help removing viruses, spyware, and other malicious…

Mar 17, 2009 launches to help computer users fight back against viruses, spyware

Site is a joint effort of Consumer Reports WebWatch and the project at Harvard University's Berkman Center for Internet and Society and Consumer Reports WebWatch announced today the full launch of, a new online community for people looking for help preventing and countering…

Mar 4, 2009 "Where's the badware?"

Maxim Weinstein examines the geographic origins of badware on the blog...

Feb 3, 2009

What is, anyway?

By way of follow up to an active weekend for our colleagues at StopBadware, project manager Max Weinstein has taken some time to answer "What is" for newcomers,…

Nov 21, 2008 now in beta

Fight back against viruses, spyware, and other badware! has teamed up with the good people of Consumer Reports WebWatch to create, a new online community for people looking for help removing viruses,…

Aug 11, 2008

Apple keeps mum

Over on the blog, Max Weinstein writes, "The other day, Rob Pegoraro at the Washington Post wrote a column about Apple’s tendency to keep its mouth shut rather…

Jun 24, 2008

China Hosts Majority of Badware Sites today released a report analyzing over 200,000 sites reported by Google as exhibiting badware behavior. Over half of the reported infected sites are hosted in…

May 9, 2008

Good things in StopBadware's world

badware alert averted + positive sign from a hosting service

This week, two heartening tales of the good fight against badware graced the blog: in dialogue with the SBW team, two companies made corrections to protect…

May 2, 2008 PerformanceOptimizer alert

Thinking about installing the trial version of SellMoSoft's PerformanceOptimizer? Not a good idea! StopBadware has the skinny on this badware gem, deceptive through and through...

Apr 17, 2008

Apple Responds to Community Concerns

StopBadware explains the situation

From the StopBadware blog... A few weeks ago, the blogosphere raised concerns about the Windows version of Apple Software Update for offering new software installations (e.g.,…

Mar 31, 2008

"An internet security paradox"

StopBadware releases the results of a recent poll on online safety perceptions, and the results present an intriguing paradox...

Mar 27, 2008 issues XP Antivirus 2008 alert

XP Antivirus 2008 has it all -- deceptive claims of system vulnerabilities, an automatically running background process -- and it can't be uninstalled with Windows Add/Remove…

Mar 25, 2008

On Tibet

Protests in Tibet - and the Chinese crackdown and troop build-up in Lhasa and elsewhere - have dominated headlines this week. China's blocking of YouTube and other measures…

Feb 22, 2008 Reprises RealPlayer recently issued an alert identifying RealPlayer as badware. On Tuesday, RealNetworks blogged a response, which StopBadware links to and evaluates...

Jan 31, 2008 Labels RealPlayer Software as Badware

Two versions, two different badware behaviors, the consumer protection initiative developed to combat badware, today released an alert about RealNetworks, Inc.'s RealPlayer software application. The group…

Dec 7, 2006 and CDT File Formal Complaint with FTC Against Spyware Operator complaint coincides with release of report, the consumer protection initiative developed to combat badware, along with the Center for Democracy & Technology, today announced they have filed a formal…

Dec 4, 2006 @ 12:30 PM

Christina Olson, Berkman Fellow, and the StopBadware Staff

Christina Olson & StopBadware staff discussed, a neighborhood watch for the internet.

Jan 23, 2006

Spyware Companies Beware: New Consumer Protection Initiative to Combat Spyware

Harvard's Berkman Center and the Oxford Internet Institute Unveil Backed by Google, Lenovo, Sun; Consumer Reports WebWatch Takes Unpaid Special Advisor Role

May 7, 2003 @ 12:30 PM

Adware and Spyware

Ben Edelman

Berkman Luncheon Series: 5/07/03 - Ben Edelman on Adware and Spyware