Meanwhile, it was giving out half-year free trial of NortonAnti-Virus.
同时，他提供了可以免费试用半年的诺顿杀毒软件半年。
2
There are a lot of these anti-virus software packages on the market names such as Mcafee and Norton are well known.
有很多这些反病毒软件的市场，如姓名、津诺顿是众所周知的。
3
Simon Ellson, a security expert for anti-virus computer firm Norton, emphasised that it's crucial to change passwords frequently and avoid repetitions in them.