Russian cybersecurity firm, Kaspersky Lab, has told workers in its U.S.-based division that they are being laid off this week and that it is closing its U.S. business, according to several sources. The sudden move comes after the U.S. Commerce Department announced last month that it was banning the sale of Kaspersky software in the U.S. beginning July 20. The company has been selling its software here since 2005.

Public schools in two Michigan counties are reopening on Thursday after a ransomware attack crippled their ability to function and closed doors to students for three days.

All of the public schools in Jackson and Hillsdale counties announced their reopening on Thursday in letters to parents, assuring them that cybersecurity experts, tech officials and law enforcement worked around the clock to restore the systems following outages that began on Monday.