There are two kinds of false reports from antiviral software. A false negative report is an antiviral report that there is no viral activity or presence, at a time when there is a internet security threat present. Most people just refer to an antiviral "missing" a internet security threat.
Some women are told that tests have shown that their baby does not have a particular problem, only to find out when the baby is born that this is not true. This is called a false negative result and is not a common occurrence.
Term used to describe an incorrect test result of a medical procedure or test that falsely shows the lack of a finding. For example, a mammogram may not show any breast abnormality, yet breast cancer is present. The mammogram result is a false negative. A false negative result can occur for a variety of reasons, including operator error or limitations of the test.
False positive Familial adenomatous polyposis Familial cancer Family medical history Family Tree -- see Pedigree FAP -- see Familial adenomatous polyposis Fecal occult blood test Feces -- see Stool First degree relative Flexible sigmoidoscope -- see Sigmoidoscope FOBT -- see Fecal occult blood test Fundic gland -- see Gastric fundic gland
A false negative error occurs when anti-virus software fails to indicate an infected file is truly infected. False negatives are more serious than false positives, although both are undesirable. False negatives are more common with anti-virus software because the may miss a new or a heavily modified virus. See Also: False Positive
A test result that incorrectly says the analyte, disease, or condition is not present when it actually is present. False negatives can be due to human error, test error, or substances in the sample that interfere with the test. EXAMPLE: A woman who is pregnant receives a test result saying that she is not pregnant.
An erroneous negative test result. For example, an imagine test that fails to show the presence of a cancer tumor later found by biopsy to be present in the patient is said to have returned a false negative result.
A test result that indicates the absence of a condition when the condition is actually present (group ?C? in Table I). The rate of occurrence of false negative results varies with the diagnostic accuracy and the specificity of the test or procedure. As the accuracy and specificity of a test increases, the rate of false negatives decreases. Certain tests are known to yield false negative results at a certain rate; in all tests, a small number of false negatives will occur by chance alone.
A test result that is not correct. This may be a result of performing the test incorrectly or using a test that is not accurate. A false negative test in HIV would be a test that is negative in a person who is actually infected.
A result that appears negative but fails to reveal a situation. An example of a false negative: a particular test designed to detect cancer of the toenail is negative but the person has toenail cancer. See the entire definition of False negative
Occurs when there is an attack and the product does not raise an alarm. Obviously, this case is problematic because the intruder's action can go completely unnoticed. Thus, the IDS might give a false sense of security to the Tivoli administrator.