Looking for new angles to socially engineer employees working from home under COVID-19 conditions, attackers have devised a new phishing campaign that distributes emails that look as if they were generated by Private Branch Exchange (PBX), a legacy technology that integrates with employees’ email clients so they can receive their voicemail recordings. Ironscales reported that the operation, discovered by its researchers last month, has threatened nearly 100,000 mailboxes around the world.