Ransomware attack hit Sierra Wireless’ internal network over the weekend, on March 20. The company says that the attack did not impact any customer-facing services or products. Sierra Wireless also withdrew the First Quarter 2021 guidance the company provided last month, on February 23. The company did not provide any info on what ransomware operation was behind the attack or if they stole documents from compromised systems before encrypting them. The IoT maker also had to shut down manufacturing plants worldwide and it expects to resume production and operations soon.