As more users worldwide have connected to the Internet, more and more security threats have surfaced on websites. As web use continues to grow, this trend is likely to increase as well

Follow this link:
Check Websites for Security Threats Using Internet Explorer 9′s SmartScreen Filter
The Internet is full of websites that are phishing for your private information or contain malicious code that can jeopardize the security of your PC. Using a safety feature built in to IE9, you can inform Microsoft when you think you’ve found an unsafe website.

See the original post here:
Report an Unsafe Website to Microsoft in Internet Explorer 9
The best quality commercial software can cost hundreds and even thousands of dollars. If you can’t afford this expensive software, you can often find free open source software with the same features for free

More:
Best Free Open Source Software Programs for Windows
A signcryption scheme allows a sender to produce a ciphertext for a receiver so that both confidentiality and non-repudiation can be ensured. It is built to be more efficient and secure, for example, supporting insider security, when compared with the conventional sign-then-encrypt approach. In this paper, we propose a new notion called heterogeneous signcryption in which the sender has an identity-based secret key while the receiver is holding a certificate-based public key pair
ZigBee is a wireless sensor network standard that defines network and application layers on top of IEEE 802.15.4’s physical and medium access control layers. In the latest version of ZigBee, enhancements are prescribed for the security sublayer but we show in this paper that problems persist. In particular, we show that the end-to-end application key establishment protocol is flawed and we propose a secure protocol instead