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`Crackers Shuffle Cash With Quicken, ActiveX
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`Scit:nce : Di~:O\ t' ti(•s ~
`Crackers Shuffle Cash With Quicken, ActiveX
`.John Gillest0 02.07.97
`Hackers belongi ng to Hamburg, Germa n)•'s Cha<.~ Compl lterCi ub have demonstrated an Acti, t'X control that,,iJ I transfer funds froffi users' bank
`accounts\vithout using a personal identification or transaction num ber.
`The Chaos crackers demonstrated their hostileActh·eX control on a Germ an 1V show to make a point about what th ey saw as the security risks posed by
`ActiveX. If made available on a web si~, the control equid install itself on a user's computer and con !rdy check to .see if the popular personal-fi nance
`software package Quicken is installed.
`Contiuning the scenario. if the control had found Quicken, it wou ld issue a transfer order and add It to that ap plication's batch of existing transfer orders.
`The next time the Quicken user paid their bills, the illicit transfer would be incl uded, unnoticed by the \ictim. Quicken claims to have more than 9
`million active users worldwide.
`Computer security experts, who have been highly critical of Microsoft'sActiveX, said this was just another example why the technology should be
`abandoned.
`"ActiveX may be very useful forintranets, but it has no place on the Internet because ofthe security problem," said Ke,'in McCurley, a cryptography
`expert at Sandia National Laboratories and the anthorofthe Digicrime Web site.
`Microsoft called the demonstration a wake-up call to users about the dangers of downloading untrusted executable code. Such executable code,
`includi ng unauthorized ActiveX code, can do just about anything it wants, from reading and writing files to installing software, such as games. or viruses.
`"In this particular case, the [ActiveX] control is anonymously offered," said Cornelius Willis, Microsoft's group pnxl uct manager in charge of Internet
`platforms. "Users should not be dmmloading and run ning exec utables that are not signed."
`The Authenticode signing mechanism req ui res all authorized ActiveX control authors to digitally "sign" thei r controls. Beyond this, Microsoft's solution
`to the security risk is largely "buyer beware." W:illlssaid the company is trying to educate users about the risks of domtloading any ldnd of executable file
`from the Web, incl uding Java applets and MSWord macros.
`"We're notsayingAuthent:icode makes anything safe," Willis said. "Authenticode simply lets you make a decision as to a particular [control's] author."
`But McCurley said authenticating the source of ActiveX controls isn't enough, because a legitimate, if poorly protected, control could later be inYoked by
`a hacker and modified tosen'e a different purpose.
`"The problem isn'tjustdom1 loadinge,~l code, it'salsodownlooding b020code," McCurley said. "lf J could get ahotd of an ActiveX component installed
`on your box. I could give it arguments and it would toast your mach in e.
`"If Act:iveX components become common," McCurley warns, "hackers will start loo~ing at them as a way to get in."
`
`Related Wired Links:
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`v-II ActiveX Threaten Nalional Secunly? by Simson Garfinkel
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