He added that the infection hides itself inside the Excel program so that some users may not know they have been infected, but he declined to estimate its potential impact.
Watson Research Center , said he has seen one case firsthand and has heard two other reports from reliable sources since the end of October. But he stressed that Laroux. B "certainly is not a widespread virus. While spreadsheets seemed immune from computer viruses until earlier this year, Sarah Gordon, a researcher with Command Software Systems , a maker of antivirus software, said there is concern that infections could alter important financial information.
While Laroux and Laroux. B do not alter the content of spreadsheets, Gordon said "viruses that infect spreadsheets can [potentially] affect the integrity of the data. She called the original virus and its offspring "rather unremarkable" but noted that even the most benign viruses take their toll on IS departments. NCSA's Wheat suggests Excel users should back up their macros just in case the virus finds its way into their programs.
Experts said they can usually come up with antidotes for most viruses within a day; several server-based approaches to ensure network-wide protection are also being developed by antivirus software vendors. IBM's Chess said his company is working on an "immune system" to protect programs from infection before they come down with the rapidly proliferating viruses.
In addition to working with the NCSA and antivirus software vendors, Microsoft will incorporate tools to detect and delete viruses in Excel 97, due by year's end. Antivirus tools are already available in the most recent versions of Word. The creator of the video said it was meant to be satire. This is part of The Associated Press' ongoing effort to fact-check misinformation that is shared widely online, including work with Facebook to identify and reduce the circulation of false stories on the platform.
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