Evaluate bugs by factors:

• Likelihood—How many transactions (sessions) does the problem occur?
  Options: <1%  · 1% · <10%  · >10% ‍

• Severity—How bad is it if the problem does occur?
  Options: Obvious workaround available (OWA) · Non-obvious workaround available (N-OWA) · Important functionality unavailable (IFU).

3x4 Matrix Likelihood vs. Severity:

• OWA + <1% → Very Low

• OWA + 1% → Low

• OWA + <10% → High

• OWA + >10% → High

• N-OWA + <1% → Low

• N-OWA + 1% → Medium

• N-OWA + <10%. → High

• N-OWA + >10% → Very High

• IFU + <1% → Medium

• IFU + 1% → High

• IFU + <10% → Very High

• IFU + >10% → Very High