Imagine coming into work, firing up your company laptop, and finding everything wiped clean. That's what employees at Stryker Corporation (SYK) are dealing with after a suspected cyberattack hit the medical device giant overnight.

The disruption began shortly after midnight on the U.S. East Coast, according to reports, and has created operational chaos across Stryker's global technology systems. Staff members attempting to access company systems discovered that remote devices—including laptops, mobile phones, and other company-connected equipment running Microsoft Windows—had been wiped.

But here's the really interesting part: employees and contractors reported seeing the logo of a hacking group called Handala on internal login pages. Handala is a pro-Palestinian group that emerged around 2022 and has been linked to Iran by multiple threat intelligence firms. The group has previously claimed responsibility for several cyberattacks targeting Israeli companies and organizations in the Gulf region in recent weeks.

So what does this mean? Well, cybersecurity experts already consider Iran a significant cyber threat, and this disruption at Stryker could represent a notable escalation in cyber activity tied to broader geopolitical tensions. We're talking about one of the largest medical device companies in the world here—Stryker has a market cap of around $137.3 billion, with an enterprise value of around $149 billion.

The company is taking this seriously. In an internal notice, Stryker instructed employees not to power on company-issued devices and to immediately disconnect from all corporate networks. The email also advised staff to avoid clicking suspicious links and to remove mobile device management applications and work profiles from their phones as a precaution.

A spokesperson for Stryker confirmed the ongoing disruption, adding that the company has not yet identified the root cause and is actively working with Microsoft Corp (MSFT) to investigate the incident.

Now, here's where it gets interesting from an investor perspective. Stryker just reported fourth-quarter adjusted earnings of $4.47 per share, topping the analyst consensus estimate of $4.39. Revenue for the quarter totaled $7.17 billion, exceeding Wall Street expectations of $7.12 billion. Looking ahead, the company forecast fiscal 2026 adjusted earnings in the range of $14.90 to $15.10 per share, compared with the consensus estimate of $14.98. Stryker also expects organic net sales growth of 8% to 9.5% in 2026.

But none of that good news mattered on Wednesday. Stryker shares were down 3.82% at $344.96 following the cyberattack news. Because here's the thing about cyberattacks—they're not just IT problems. They're business problems. They disrupt operations, they cost money to fix, and they create uncertainty. And when you're a medical device company, that uncertainty extends to patient care and regulatory compliance.

Stryker continues to investigate the incident as efforts remain underway to restore affected systems and determine the full scope of the disruption. But for now, employees are disconnected, devices are wiped, and investors are watching closely to see how this plays out.