Does Trust Guard offer PCI Certification / Scanning or Vulnerability Scanning?

No we don't, and there's a good reason why - because small businesses generally don't need PCI scanning. What most people don't know is that PCI Certification / Scanning is not required by small businesses that do less than 20,000 transactions per year. In addition, almost all major Payment Gateways like Authorize.net, Linkpoint, Paypal, 2Checkout, CCBill, etc. are already PCI Certified and are scanned regularly for vulnerabilities in order to process credit cards on your behalf. So, as long as you use your payment gateway's SSL to process your transactions, or you use your own SSL certificate to connect to your gateway provider, and your customers private credit card information is stored there, your transactions are protected and safe.

"What is the difference between Trust Guard and Hacker Safe?"

Basically, the main difference between Trust Guard and Hacker Safe is that HackerSafe focuses on server verification, also known as PCI Scanning or Vulnerability Scanning (as mentioned above), where they scan your hosting server for vulnerabilities. Trust Guard on the other hand, focuses on website verification. We verify your businesses identity, so that your customers can have peace of mind in knowing that your address and contact information is real and accurate. We also verify that you have important items in place to protect your customer, like a good Privacy Policy and a valid SSL certificate on your checkout pages. Trust Guard's website verification services are affordable for small business owners, while providing more credibility and value than our competitors, because we actually resolve three customer concerns (Security, Privacy, and Business Identity) whereas our competitors only resolve one.