But keep in mind that neither firewalls nor antivirus software packages are foolproof. That's because hackers and antivirus software companies are in an arms race. As new computer viruses are created, computer systems are vulnerable unless new antidotes are developed and used by companies. The best way to avoid security breaches is to implement a loss control approach. You should have firewalls, but you also should appreciate their vulnerabilities.
Firewalls help thwart external threats.
But the integrity of your e-commerce system can be jeopardized from inside your firm by a disgruntled employee, for example. Security as an afterthought maximizes the odds of key system gaps. Install systems capable of handling volume spikes. Boosting your traffic capacity makes your site less vulnerable to hackers attempting to flood it and shut it down. Design the system to handle peak-load periods or install queuing systems to trim the odds of your web site being overwhelmed.