Even more concerning, experts say the reasons why TikTok — which had reportedly been caught red-handed spying on journalists in the past — remains unclear.

"TikTok itself doesn't explicitly state the exact cause," according to an article from industry expert publication Dataconomy.

The highly worrisome issue was reportedly first observed in late November and saw several more users sound the alarm throughout December, according to Dexerto.

It was also around this timeframe that Apple released two urgent security updates for iPhone and other product users.

The more recent iOS update, which rolled out on Dec. 11, patched a bug that allowed access to sensitive user data.