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Recently, WhatsApp announced that it has fixed a software vulnerability that was being exploited by unknown hackers to target specific users of Apple products and infect them with spyware. According to an advisory, a previously unknown bug “may have been exploited in a sophisticated attack against specific targeted users.” WhatsApp resolved the issue last week, while Apple also fixed another bug, known as CVE-2025-43300. These vulnerabilities appear to have been the weak points that allowed malicious spyware attacks targeting specific users, with the aim of stealing their data.
To determine if your phone has been compromised, look out for subtle changes in its behavior. A phone hack is often not announced with a flashing red light, but rather manifests through a series of concerning changes. One of the first indicators of a potential hack is unusual phone behavior. Although this may not always be obvious and can be dismissed as a minor glitch, consistent and unexplained anomalies should raise a red flag. Recognizing these indicators is the first step towards identifying a potential breach.
Unusual Battery Drain: A common sign of a compromised phone is a rapidly draining battery. Malware or spyware running in the background constantly consumes power, even when the device is not in use. If your phone’s battery life has significantly decreased, it’s worth investigating.
Increased Data Usage: Similar to battery drain, unexpected spikes in data usage can indicate a hack. Malicious software often communicates with external servers, sending out data or receiving instructions. Regularly check your phone’s data usage statistics. If you notice a significant increase without a corresponding change in your habits, be suspicious.
Slow Performance and Frequent Crashes: A hacked phone can become noticeably sluggish, with apps taking longer to open, frequent freezing, or spontaneous restarts. This is often due to malicious software consuming the phone’s processing power and memory.
Strange Pop-ups and Ads: While some apps display ads, an abundance of unsolicited pop-up ads, especially when not browsing the internet, can be a strong indicator of adware or spyware. These ads might also redirect to suspicious websites.
Unfamiliar Apps: Regularly review the apps installed on your phone. If you discover apps you don’t recognize or remember installing, delete them immediately. Some sophisticated malware can disguise itself as legitimate system applications.
Overheating: A phone working overtime due to hidden processes can generate excessive heat, even when idle. If your phone feels unusually warm to the touch without heavy usage, it could be a warning sign.
Unusual Messages or Calls: Be wary of text messages or calls from unknown numbers that seem out of place. Phishing attempts often start this way, trying to trick you into clicking malicious links or revealing personal information. If friends or family report receiving strange messages or calls from your number that you didn’t send, your phone might be compromised.
Changes to Settings You Didn’t Make: If you notice changes to your phone’s settings, such as your homepage being altered, new browser extensions appearing, or security settings being lowered, without your input, it’s a red flag.
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