Valak Loader Revamped to Rob Microsoft Exchange Servers - Phishing campaigns targeting enterprises in U.S. and Germany have been used to nab enterprise mail... more: https://threatpost.com/valak-loader-microsoft-exchange-servers/156078/ #enterprisecertificates #microsoftexchange #unitedstates #enterprises #infostealer #cybereason #malware #germany #icedid #ursnif #valak