Woodsville Guaranty Savings Bank employs the latest in Internet Security and User Authentication to ensure that data being transmitted through the Internet banking system is secure from unauthorized access. The methods are outlined below. Digital IDs from Thawte Woodsville Guaranty Savings Bank uses digital IDs certified by Thawte, an industry leader in digital identification certificates, to authenticate user information and provide access to the data through the system. How do digital IDs work? Digital IDs work off of a matched key setup where the server has a "private key" issued only to the server and a "public key" widely distributed to the Bank's customers. A digital ID requires a matched pair of keys that are unique to each other to encrypt and decrypt data. With this setup, transactions created, encrypted, and transmitted by bank customers using the public key can only be decrypted by the other key in the pair running the server. Woodsville Guaranty Savings Bank has strong encryption capabilities. The strength of this encryption algorithm is 128-bit, which is the highest commercially available level of encryption. Secured Data Transmission The Internet banking system, combined with digital ID authentication through Thawte, allows the server to implement Secure Sockets Layer (SSL) protocol, the standard technology for secure web-based communications. With SSL, data traveling between the Bank and customer is encrypted and can only be decrypted through the pairing of the public and private key pair. SSL capability is built into server hardware and browsers, but requires a digital ID to be functional. Server Access Server access is protected using a firewall computer and the leading firewall software. Firewall computers provide secure access to the Web Server and its software by only allowing authorized traffic to hit the Server. *This Statement is Subject to Revision Without Notice*

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