Examples of Ethical Standards and Professional Values

Look for journalistic standards of reporting. High-quality, investigative news sources have explicit editorial policies and follow a code of ethics or professional standards. Examples: Society of Professional Journalists (SPJ) Code of Ethics; Ethical Journalism Network's 5 Principles of Ethical Journalism.

Does the news source you are using have an explicit Editorial Policy?
Does it follow a Code of Ethics?
Lack of an explicit editorial policy or a statement of ethical standards is a red flag indicating suspect content.

Specific examples of policies and standards:

Accountable sources issue corrections for errors and inaccuracies they subsequently discover. Fake news sources are not accountable for their content. Fake news creates or uses content that is partially fabricated or contain misleading information as well as outright falsehoods.