Each organization has different needs. As a professional, it is your job to assess your organization's specific needs.
Law enforcement professionals may determine that their caseloads are too extensive for the manpower they have. Maybe the equipment they are using is outdated . Perhaps they have issues with a particular type of software.
Corporate organizations may want to make sure they formulate security policies by assessing risk, threats, and their exposure factor to determine how best to keep their networking environment safe. Corporations can also have outdated equipment or applications, making their networks more vulnerable.
Because every organization is different, with different policies and requirements, there are no 'one size fits all' rules to ensure all security bases are covered. Training and education will make a good start, but you must constantly update your knowledge of new hardware, software, and threats. You should recognize how they affect your work and your organization so that you can continuously reassess your vulnerabilities. Remember, a computer forensic technician is a combination of a private eye and a computer scientist.