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What to Do in the Aftermath of a Data Breach

Internet users in the United States rank first for data breaches. In this edition of SecurityWatch, we tell you what to do if your information winds up in someone else's possession.

 & Kim Key Senior Writer, Security

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Shortly after joining the PCMag team in 2021, I started receiving weird emails. They weren't from readers or Twitter reply guys,;p as I expected. Instead, they were from Instagram, informing me that people in Brazil, China, or Iran were trying to access my long-dormant account. The warnings prompted me to log in, change my password, store it in a password manager, and enable multi-factor authentication on my account. The process took less than five minutes from start to finish, and I even decided to start posting and interacting on Instagram again. 

So what happened? After entering my email address into the form on the Have I Been Pwned website, I determined my information surfaced as part of a data breach, and because I'd reused my Instagram password for another account on the web, my Instagram account was ripe for a takeover by a stranger. That weekend, I went through all my online accounts, changed the passwords, stored them in a password manager, and enabled multi-factor authentication.

Data Breach Statistics

It's tough to keep your information private these days. As PCMag Editor Jason Cohen reports, people in the United States experienced the most database breaches in 2021, with 214.4 million accounts affected. Let's look at the bigger picture and consider that globally: 955.8 million accounts were affected by data breaches in the first 11 months of 2021.

How to Secure Your Information

So what can be done about it? The worst you can do is nothing, which is the course of action (or rather inaction) that about 16% of people choose after learning of a data breach, according to one survey. 

Instead, use a password manager to create and store unique and strong login credentials for sites all around the web. The best password managers require a strong master password, and the password manager can even help you generate a strong master password that's long and has different character types. Your only job is to remember that one master password.  

Using multi-factor authentication is also the right idea in the age of daily data breaches. In addition to using a password manager, enable multi-factor authentication on your accounts wherever possible using either an authenticator app on your phone or a hardware security key. Try to avoid SMS authentication, as it has proven in the past to be a less-secure authentication method.

Even with preventative care, hacks occur. PCMag lead security analyst Neil J. Rubenking put together a short guide on how to handle a hack and get your life back on track fast. 

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The Top Sites Collecting Your Personal Data

You should be flattered—the world's biggest brands want to know all about you. In some cases, many of them already own an extraordinary amount of your personal information. Facebook, for example, knows your race, religious beliefs, hobbies, preferred phone or mobile device type, and even your current location. According to PCMag features editor Eric Griffith, social networks, online stores, and even streaming services collect lots of information about you

In many cases, you hand over your banking details when you sign up for Tinder or Netflix. Other services collect information about you over time via cookies that follow where you visit online and what you buy online.

Clario's chart containing a list of the sites that collect the most data

It's no surprise that Facebook tops the list, as many people willingly share plenty of information about themselves on the social platform. In contrast, Pornhub (which ranks 48th on an extended version of the same chart shown above) collects very little information about its users, just noting, ahem, "Interests" and the type of device used to access the site. Pornhub doesn't even want your email address, unlike just about every other service on the chart. 

Take a look at the full report on Clario's website.


What Else is Happening in the Security World This Week?

Stop Trackers Dead: The Best Private Browsers for 2022. Online marketers mine your data and target you for sales. Foil their efforts with these secure browsers' tracking protection and privacy features.

LastPass Says 'Credential Stuffing' Warnings Sent in Error. The company originally believed a credential stuffing attack was targeting its users, but it now says recent security alerts "were likely triggered in error.

'DoorLock' Vulnerability Can Force iOS Devices to Endlessly Reboot. A flaw in Apple's HomeKit can be exploited to force iOS devices into endless reboot cycles.

The Best Parental Control Apps for Your Phone in 2022. If you want to keep your kids safe online, you need a parental control solution that monitors all their devices. These apps are the top cross-platform performers in our testing.

The Best Free Antivirus Protection for 2022. Microsoft Defender is improving, but you still shouldn't rely on it by itself. That doesn’t mean you have to pay extra, though. We’ve tested the top free antivirus apps so you can protect your PC for free.

About Our Expert

Kim Key

Kim Key

Senior Writer, Security

My Experience

I review privacy tools like hardware security keys, password managers, private messaging apps, and ad-blocking software. I also report on online scams and offer advice to families and individuals about staying safe on the internet. Before joining PCMag, I wrote about tech and video games for CNN, Fanbyte, Mashable, The New York Times, and TechRadar. I also worked at CNN International, where I did field producing and reporting on sports that are popular with worldwide audiences.

In addition to the categories below, I exclusively cover ad blockers, authenticator apps, hardware security keys, and private messaging apps.

The Technology I Use

I like testing new software for work, but I'm less "plugged in" to the internet than I used to be. I tend to read app privacy policies to see what kind of data companies collect, and as a result of those findings, I don't use many mobile apps. In a similar vein, I was an early adopter of many social media platforms, but now I’m just an infrequent Reddit lurker.

I'm a gear junkie. I split my work time between a 2021 Apple MacBook Pro and a Lenovo ThinkPad. I shoot most of my videos for PCMag using a Canon M50, a Sony A7iii, and a Sony a6000. I edit videos using Final Cut Pro and Adobe Premiere Pro.

I write all of my words for PCMag either in the MS Notepad app on my ThinkPad or the Notes app on my iPhone 12 mini. If I'm traveling and working, I use my iPad to write short articles or take notes.

My dad built me my first computer sometime in the late '90s, and I used it for reading Encyclopedia Britannica and writing Sailor Moon fan fiction. My first phone was the ubiquitous Nokia candy bar.

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