When you think about the sort of data collated on your PC, it can be quite scary to consider just what someone could do with it, given criminal or otherwise nefarious motives. From the obvious (such as passwords, date of birth, user names) to the less so (colleagues contact details, business plans etc.) a lot of harm can be instigated by trawling your personal data. Once you factor in the portability of laptops, and therefore the exponentially increased chances of that data being stolen, you really need to consider all aspects of how you secure your digital life, from encrypting hard drive data, to Internet Security.
alertsec offer a 30 day trial of their software, so even if (in the unlikely event) you decide the product does not match your needs, you lose nothing. On the whole, the content of the site indicates a professional company is behind their products, however a couple of small (typographical) errors could do with correcting.
Anyway, if you value your data, give the site a visit, spend a few minutes reading what they can do to secure your info, what do you have to lose?