This week, former New York Congressman Anthony Weiner was back in the news for sending more lewd images over Twitter. And last year, 37 million cheating husbands, wives, boyfriends and girlfriends that turned to Ashley Madison for an illicit affair were exposed by the hacker group The Impact Team. These blunders serve as a reminder that lovers that are engaged in an affair can often be tripped up by the technology they use. In fact, there are many tech clues cheaters leave behind on their cell phones, computers and other electronic gadgets that you can look for.
Tech clues to a cheating spouse: The Basics
Calls on your spouse's cell phone
Are there numerous calls to numbers you don’t recognize, especially at odd hours of the day or night? You can often determine who owns a particular landline number simply by entering the number into Google search.
Names and numbers you don’t recognize
Chances are your spouse won’t take the risk of entering the full name of the person he or she is cheating with, so look for numbers that are identified merely with initials or a first name. Or, he or she may add a lover’s number to a family member or friend’s contact entry to mask his or her identity. Also look for suspicious names in their messaging and video chat apps.
Incriminating text messages and emails
Text messages and emails are the modern means of sending love letters, and your spouse may have kept them on his or her phone for ongoing enjoyment. And be sure to check the "deleted items" or "trash" folder. People frequently let their discarded emails linger for weeks before they're permanently erased.
Also look for secondary messaging apps like SnapChat that are designed for temporary sharing of text messages, photos and videos.
Perhaps your spouse chose to save a couple of the steamy ones for later playback. And if your spouse uses your carrier’s visual voicemail feature, the messages may be backed up online.
Did your spouse purchase an extra ticket with miles or are there frequent-flier miles for a trip to New York when they were supposed to be in Seattle? You may be able to log in to your spouse's account online if their login info is stored in the browser or password bank, otherwise check their email for their monthly statement.
Toll pass history
If you use E-ZPass or another toll payment system in your cars, check the online statement. Is there unusual activity showing your spouse driving on the New Jersey Turnpike when they’re supposed to be at work in Westchester?
Cheating Clues You May Have Overlooked
Apps to hide photos, videos and other apps
There are apps available, such as KeepSafe (free on Google Play) or Vault (free on App Store) that let you store photos and videos in a password-protected, encrypted folder on your smartphone. Others, like Hide it Pro (free on Google Play) will hide apps as well. If you find one of these apps and there's no obvious reason why your spouse would need it, that may be cause for suspicion. And if your spouse chose an app with poor security, accessing the contents can be quite easy.
There are ways to hide apps on iPhones by nesting them in folders. But those apps can still be found using the iOS search feature (touch the middle of the screen and swipe down).
For Android devices, you’ll want to open the menu in the app drawer and select “Show hidden apps.” Other apps, like Hide it Pro, require a hidden passcode, so you may not find anything.
Computer's browsing history, temporary internet files and download history
If your spouse is supposed to be on a business trip to Seattle but browsing hotels in New York, this is where the browser history can help you out. Also, the browser history may reveal whether they're visiting email sites (e.g., Gmail, Hotmail) where you didn't know they had an account.
In addition to recording your browsing history, your browser store temporary files, including full web pages. So while your spouse may have deleted the browser history, he or she may have left their temporary internet files. On Chrome browsers go to chrome://cache/, the hit Ctrl+F and type .jpg or .jpeg or .gif in the search box to find images.
Finally, you can check the browser download history. If it hasn’t been cleared, you can find a list of downloaded files, including those that have been deleted. If a photo has been deleted, you may still be able to find it in the computer’s trash or recycling bin.
Autocomplete for apps and sites
Many apps and services, like Facebook and Google search, will facilitate your searches by auto filling when you start to type, based on what you’ve searched for before, or show you a list of recent searches. Try selecting the search bar or start typing to see what pops up.
Many people use navigation apps for directions, which means location-based services are turned on. In turn, that means a person’s smartphone may have captured their location data on an ongoing basis. For Android users signed into their Google account, the information is captured in Google Timeline, which can be accessed within the Google Maps app or online at https://www.google.com/maps/. The same holds true if the person uses Google Maps on their iPhone, except there is no access to Timeline from the iPhone version of Google Maps.
For iPhone users, there is another stash of location information. Go to Settings > Privacy > Location Services and then scroll down to System Services > Frequent Locations. There you can see a map and list of the most frequently visited places as well as the times the locations were visited.
A second cell phone or SIM card
If your spouse is clever, he or she will be using a second cell phone—or just a second SIM card—-for communicating with his or her lover. However, people slip up occasionally. If your spouse calls you from a cell phone number you don’t recognize, that may be cause for suspicion. Try calling the other number when your spouse is home and see how they react. If you happen to find an extra SIM card, stick it in a phone and see what phone numbers are stored on it.
File backup services
Cloud-based file backup and sync services are great for ensuring you don’t lose files and photos. They are also the perfect place to search for files your spouse thinks have been deleted. That’s because many services will let you undelete files that have been deleted on a computer or phone. For instance, on Dropbox, you select the trash can to show deleted files and then restore them to view them.
There may be more photos than you’d think because many people use their file backup service to automatically back up the photos they take with their phones. Look for a folder called “camera uploads” or something similar that the backup service creates to store copies of photos and videos.
Previous destinations in your spouse’s navigation system
Practically every nav system—built-in, portable and on your phone—has a list of previous destinations. If the No-Tell Motel off the Jersey Turnpike is on there and your spouse doesn’t work in the hospitality business, that’s a sign something may be up.
A word of caution
Before engaging in any electronic snooping, be aware that there are strong federal and state electronic-eavesdropping and hacking laws in place to protect our privacy. It would be wise to consult with an attorney to ensure you don't engage in any activities that are in violation of the law—if you end up in a nasty divorce, being charged with spying crimes is not a good position to be in.
Updated on 8/30/2016 with new recommendations.