Scottish law firm MacRoberts has improved its online security after suffering a distributed denial of service (DDoS) attack.
The attack at the end of 2006 took the companyâ€™s entire inbound and outbound emails out of service for two days.
â€˜Things ground to a halt very quickly,â€™ said David Murphy, director of IT at MacRoberts.
â€˜Mail was trickling in and out and we were getting bombarded with thousands of spam emails.
â€˜We tried to kick our old security vendor into action but they could not do anything.â€™
Since the breach, MacRoberts has installed a switched security system from vendor Postini which filters all mail before it reaches the law firm, dramatically reducing the chance of being affected by further attacks.
â€˜The new system can filter out these attacks as they happen,â€™ said Murphy.
â€˜We have suffered attacks since and been fine â€“ all we know of it is a report from Postini saying they have occurred,â€™ he said.
Previously the firmâ€™s IT staff needed to check thousands of spam emails to ensure genuine messages had not been blocked. The new system has freed up half a dayâ€™s work every day.
Graham Titterington, principal analyst at Ovum, says a DDoS attack is a result of many factors.
â€˜Attacks could be motivated by a competitor looking for advantage, or more likely out of malice towards the law firm,â€™ he said.