Pegasus spyware

Pegasus is spyware that can be installed on Apple and Android mobile systems. It’s difficult to detect, and difficult to remove. Pegasus is developed by NSO Group, who deny that the software is being used for anything nefarious, or that if it is, that use has nothing to do with NSO Group.

The methods used to install Pegasus on mobile devices have changed over the years. It can be installed directly, with physical access to the target device, which is presumably how it ends up on devices legitimately. Pegasus can also be installed more surreptitiously. Previously, that involved inviting the user to click a link in an email or SMS message. More recently, it’s being installed using app and O/S exploits that require no interaction from the user, including a very nasty exploit for WhatsApp.

Pegasus is not a virus. It does not spread on its own. Further, it’s important to distinguish between Pegasus and the methods used to install it. Pegasus does not typically arrive on a device at random. Devices are specifically targeted, and those targets are often used by journalists, suspected terrorists, and other people whose activities are tracked by government agencies and criminal organizations.

The main problem here is not Pegasus, but the way security vulnerabilities are discovered and — more importantly — how information about vulnerabilities is disseminated. Unfortunately, some organizations perform this research not for the public good, but for themselves and their partners, legitimate and otherwise. In an ideal world, when a vulnerability is discovered, the vendor is informed privately and then proceeds to develop and release a fix. In reality, vulnerabilities and exploits are often hoarded.

Advice to anyone who operates a mobile device and wants to reduce the likelihood of Pegasus or other unwanted software being installed without their knowledge: stay informed regarding security vulnerabilities in your device’s O/S and any apps you run. When you learn about a zero-click exploit, immediately install a fix if one is available, or uninstall the affected app. If it’s an unpatched O/S vulnerability, all you can do is hope that you’re not being targeted.

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About jrivett

Jeff Rivett has worked with and written about computers since the early 1980s. His first computer was an Apple II+, built by his father and heavily customized. Jeff's writing appeared in Computist Magazine in the 1980s, and he created and sold a game utility (Ultimaker 2, reviewed in the December 1983 Washington Apple Pi Journal) to international markets during the same period. Proceeds from writing, software sales, and contract programming gigs paid his way through university, earning him a Bachelor of Science (Computer Science) degree at UWO. Jeff went on to work as a programmer, sysadmin, and manager in various industries. There's more on the About page, and on the Jeff Rivett Consulting site.

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