mmsend57.comは安全ですか？

The ISC2 organization ***** that I am a member of uses this provider to manage their email communications. How ironic if this site is not trustworthy. About (ISC)² Headquartered in the United States and with offices in London, Hong Kong and Tokyo, the International Information Systems Security Certification Consortium, Inc., (ISC)²®, is the global, not-for-profit leader in educating and certifying information security professionals throughout their careers. We are recognized for Gold Standard certifications and world class education programs.