Photographer: Johan Nilsson / TT

The list of IT hassles with major consequences in recent times is long.

During several hours low all reservation down due to technical problems with their supplier of IT services.

Richard Widh, senior technical officer at the Swedish Civil Contingencies Agency, MSB, says that many of today's complex systems containing hidden or forgotten due chains.

There are no completely secure systems, but do you have a good segmented protection so the attacker will not continue in the system, says Richard Widh.

Concretely calls Martin Törngren a new kind of engineers.

Some incidents should be reported to the Security Service or the Defence Forces - especially incidents in the system that deals with confidential information relating to national security, or in systems that need particular protection against terrorism.

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