The browser-independent Hotspot Shield from AnchorFree (anchorfree.com), for example — available for Windows, Macs, iPhone and Android — channels all Web activities through a personal VPN and secures Internet communications by turning all HTTP traffic into the safer HTTPS (which is what your bank uses for a safe connection). There's an ad-supported free version and a beefier "elite" option ($29.95/year) with more bells and whistles.

Similarly, Tor is free software that defends you against Internet surveillance that threatens personal freedom and privacy. Short for "The Onion Router" — which gets its name for its "layered" approach to the encryption process — Tor (torproject.org) provides online anonymity as the software routes Internet traffic through a worldwide volunteer network of servers to conceal your location or online usage patterns.

USB STICKS

In some cases, software to encrypt your connection is kept on a USB drive — so you can remain safe and secure even when using a public PC.

SurfEasy Private Browser ($69.99 one-time fee; surfeasy.com) is a tiny USB key that fits into a credit card-shaped case to be kept in your wallet. When you plug it into a PC or Mac — be it your own computer or a public one — it instantly launches its own password-protected browser and you're good to go (no proxy or network settings to configure).

Your browsing session is handled through SurfEasy's fast and secure private proxy network. Your IP address will be masked throughout the session.

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