How to Defend Yourself Against NSO Spyware Like Pegasus

An international group of journalists this month detailed extensive new evidence that spyware made by Israeli company NSO Group was used against activists, business executives, journalists, and lawyers around the world. Even Apple’s iPhone, frequently lauded for its tight security, was found to be “no match” for the surveillance software, leading Johns Hopkins cryptographer Matthew Green to fret that the NSO revelations had led some hacking experts to descend into a posture of “security nihilism.”

Security nihilism is the idea that digital attacks have grown so sophisticated that there’s nothing to be done to prevent them from happening or to blunt their impact. That sort of conclusion would be a mistake. For one thing, it plays into the hands of malicious hackers, who would love nothing more than for targets to stop trying to defend themselves. It’s also mistaken factually: You can defend yourself against NSO’s spyware — for example, by following operational security techniques like not clicking unknown links, practicing device compartmentalization (such as using separate devices for separate apps), and having a virtual private network, or VPN, on mobile devices. Such techniques are effective against any number of digital attacks and thus useful even if NSO Group turns out to be correct in its claim that the purported evidence against the company is not valid.

There may be no such thing as perfect security, as one classic adage in the field states, but that’s no excuse for passivity. Here, then, are practical steps you can take to reduce your “attack surface” and protect yourself against spyware like NSO’s.

Pegasus Offers “Unlimited Access to Target’s Mobile Devices”

The recent revelations concern a specific NSO spyware product known as Pegasus. They follow extensive prior studies of the company’s software from entities like the Citizen Lab, Amnesty International, Article 19, R3D, and SocialTIC. Here’s what we know about Pegasus specifically.

The software’s capabilities were outlined in what appears to be a promotional brochure from NSO Group dating to 2014 or earlier and made available when WikiLeaks published a trove of emails related to a…