Yes, eHarmony is pretty safe and secure. You can choose to accept or decline message or video dating requests, and if needed, you can always contact the support team to report and block users. Moreover, the site has been in service for many years now and so far didn’t have any issues with data leakage. Still, no matter how secure the site is, there is always a risk of coming across scammers and bots. So it’s always important to also be very vigilant with your data, and never share any personal info, like the credit card number, your financial status, e.t.c, especially with people you don’t know.