A school district in Manor, Texas, was caught in a phishing email scam that cost $2.3 million in losses. 

From ransomware strains and cryptomining campaigns that delivered the most attack payloads to phishing attacks that wreaked the most havoc, what are 2019's nastiest threats, identified by Webroot?

A mobile-aware phishing campaign targeting non-governmental organizations around the world, including a variety of United Nations humanitarian organizations has been detected. 

A  new report -- Webroot® Threat Report: Mid-Year Update -- has found that one in 50 URLs are malicious, nearly one-third of phishing sites use HTTPS and Windows® 7 and exploits have grown 75 percent since January 2019. 

Phishing attacks topped the list of concerns for decision makers with nearly 75 percent of executives citing phishing emails as the most significant threat, according to The State of Security Awareness Training report from CybeReady.