Archive for the ‘Malware’ Category

Give the Bad Guys your PayPal Account?

Thu, 20 May 2010

I was concerned to read this blog post from PayPal’s VP of Platform, announcing their Mobile Payments Library. The feasibility of in-application mobile payments is something I’ve looked at often over the years, and I’ve always come to the conclusion that it’s extremely difficult to do securely. I haven’t seen any evidence here that PayPal have solved that.

There are some interesting challenges at the API level that are probably only relevant to security geeks (how does the service know that the application that’s invoking it is properly authorised?) but I won’t go into that now, because it seems there is a more basic and glaring error:

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Freeware Application Testing Idea

Thu, 01 Apr 2010

We know that there is a lot of inconvenience associated with distributing free (as in beer) applications for the Symbian platform at the moment – either the developer has to pay to get it Symbian Signed or every user has to sign the application for their own phone using Open Signed Online.

I am suggesting that the Symbian Foundation should host a beta test site for free applications. Developers and volunteer testers would be able to sign up to the site with just an email address and an IMEI, and then they could upload any application they like, and download any application they like. On download, the application would automatically go through Open Signed Online and be signed for that user’s specified IMEI.

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Mobile Malware “Study”: Not News

Fri, 31 Jul 2009

SMobile Systems put out a press release this week, with the headline “One in 63 Smartphones Infected by Mobile Spyware and Malware”. Unfortunately this headline is grossly misleading, and it has therefore been the cause of a lot of inaccurate reports.

It’s striking that SMobile Systems have chosen not to publish any of the supporting data from this “study”. I believe this is because, when the actual data is examined, the accurate conclusion is malware or spyware found in only 31 infected smartphones, most of them obsolete, which would, of course, be of no interest to any news media.

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Signed Malware, Revoked

Thu, 16 Jul 2009

A number of blogs and news sites have picked up on a report from Dancho Danchev last week, identifying some malware that was submitted to, and signed by, the Symbian Signed portal.

As soon as we were notified of that (the following day) we revoked both the content certificate and the publisher certificate used to sign the malware. That means that the Symbian software installer will not now install the malware, providing that revocation checking is turned on. Unfortunately, revocation checking is often turned off by phone manufacturers, because the data traffic could cause problems for people who do not have a data plan as part of their service or who pay for data by volume.

Here’s how to turn on revocation checking, which we strongly recommend if you have a flat-rate data plan:

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Hey, I’m on the Radio!

Tue, 02 Jun 2009

This morning the BBC World Service broadcast my response to their Digital Planet report on mobile malware. I’m pleased with the way it came out, thanks to Gareth Mitchell’s sympathetic interview and Michelle Martin’s excellent editing!

It’s repeated twice today and once tomorrow, and you can also listen online or download the podcast.

The Mobile Malware Threat

Tue, 05 May 2009

Last week, the BBC World Service radio programme Digital Planet included a piece on mobile phone viruses. This was based on research done at the Center for Complex Network Research (CCNR) entitled Understanding the Spreading Patterns of Mobile Phone Viruses.

Steve Litchfield of All About Symbian, pulling no punches, calls this “a load of BBC tosh” ­čÖé To be fair though, I don’t particularly blame the BBC, who have simply taken journalistic license with the report’s main conclusion: “it is not unconcievable[sic] that the phase transition point will be reached in the near future, raising the possibility of major viral outbreaks.”

Unfortunately for the BBC and Professor Barab├ísi at the CCNR, I think the research is flawed. (more…)