"Garmin's infrastructure has suffered a massive failure, and although the company has not officially confirmed it, the finger of suspicion points strongly in the direction of a ransomware attack", wrote security consultant Graham Cluley.
As a result, the company yesterday was forced to temporarily shut down some of its connected services, including Garmin Express, Garmin Connect mobile, and the website-restricting millions of its users from accessing the cloud services or even syncing their watches locally to the app.
In an online statement, the company did not specify that it was the target of a ransomware attack, in which hackers infiltrate a company's network and use encryption to scramble data until payment is received. The attack also took down flyGarmin, its aviation navigation and route-planning service.
Few things are more devastating to self-quantifying fitness nerds than not getting credit for that run, bike, or walk - but that's exactly what's happening to owners of Garmin wearables.
Garmin is well-known for producing devices like Forerunner smartwatches that help the user track running performance.
Garmin Connect is the companion app to the company's wearable devices for tracking workouts, participating in fitness challenges with friends, and managing health data.
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Also in attendance was Yankees legend Mariano Rivera, who was voted to the Baseball Hall of Fame in January. The event will mark the first time as president Trump has thrown the first pitch.
It's unclear who was behind the reported ransomware attack, but it could be a strain of ransomware known as WastedLocker, according to ZDNet, which cited online posts from Garmin employees. The attack led to the suspension of its manufacturing operations and affected its website, and mobile application Garmin Connect to go offline. But Garmin hasn't publicly confirmed any such attack. But a person familiar with the incident response told The Associated Press the attackers had turned over decryption keys that would allow Garmin to unlock the data scrambled in the attack.
The company says it can't receive any calls, emails, or online chats.
If you head to Garmin.com, at least at the time of this writing, you'll see a message that mentions an "outage", but that's underselling it a bit.
"We are working to resolve this issue as quickly as possible and apologise for this inconvenience", Garmin said.
What's not known is whether the ransomware attack, if that's what it is, is just wreaking havoc on Garmin's systems, or whether customer data has been compromised in the attack too.