The Attributer’s Blog – Business Strategic

The Attributer writes this just after the announcement by Yahoo that, back in 2014, “state-sponsored” hackers stole information from about 500 million users in what appears to be the largest publicly disclosed cyber-breach in history. What! And now you’re telling those users that they should “change their passwords”, some two years later. Isn’t that a bit late? Horses and stable […]

The Attributer’s Blog – Regression Planned

First reported in the Telegraph on 21st April 2016, and later by Channel Four News on 24th May 2016, was an incident affecting UK National Security that occurred during the previous year, on 13th June 2015. “Semaphore, the computer system that checks passengers on their way to the UK against watch lists of suspect individuals, had faltered after being flooded […]

The Attributer’s Blog – Exit-Ready

Sometimes an enterprise has to get out of some business arrangement for some reason. It may be something the business has been considering for some time and finally comes to a decision after some trigger event, or it may occasionally be a totally unexpected requirement to find a way out, triggered by an event totally unexpected or at least uncertain. […]

The Attributer’s Blog – Informed

An important aspect of good system design is that users should understand how the system works for their benefit. The attribute ‘informed’ is defined in the Big Blue Book of SABSA (Enterprise Security Architecture: A Business Driven Approach, Sherwood, Clark and Lynas) as follows: “The user should be kept fully informed about services, operating procedures, operational schedules, planned outages, and […]

The Attributer’s Blog – Safe

In this article we pick up the thread of the previous article on the attribute ‘emergent’ with regard to system properties and follow it through on a specific path – that of systems safety. By ‘safety’ we mean not being injurious or dangerous to human life and health. Safety and security are closely related concepts. In the French and Dutch […]

The Attributer’s Blog – Emergent

SABSA thinking is based heavily on systems engineering concepts. We see the enterprise itself as a system of systems, hierarchically complex, with layered tiers of sub-systems and component interactions at every level of decomposition and abstraction. Systems are designed to have certain functionality to meet the system requirements, and in SABSA we articulate these requirements and functional properties through a […]