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Long story short, this post will guide you to create your own mail server instead of looking for mail hosting service around the whole Internet. Background Like most g…

Recently I dealt with a cyber security attack using MS Office365 3rd party app to grant access to senior staff's email data. This is something new and advanced targeted …

I wrote a previous blog talking about how to issue and install letsencrypt ssl cert on Synology 3 years ago. I also participated in updating the early version of Synolog…

For macOS users, XQuartz is a must have supporting app to run Windows application on macOS. However, XQuartz the latest version is 2.7.11 which hasn't been updated since…

The fraud landscape is a moving target, and this means that merchants must be ever vigilant against fraud threats. A great deal of merchant focus is on stopping friendly…

Background Some companies are still using legacy VPN technology for employee and contractors to access on premise system remotely. Under the cloud trend, more and mo…

Email threats continue to persist as one of the most common infection vectors. Demonstrating the prevalence of email inbox targeting, Verizon's 2019 Data Breach Investig…

The HTTP response headers that allow us to configure and deploy security features on our site. There are headers like Content Security Policy, Strict Transport Security,…

The IT technologies are changing from closed on premise infrastructure to cloud platform. Security is no longer segregated trusted zone but more zero trust approach. Wha…