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Technology use has brought about the perpetration of both sexting coercion and image-based sexual abuse (which includes sharing or threat of sharing someone's intimate image). This study sought to examine the association between the Dark Tetrad, propensity to morally disengage, and the perpetration of sexting coercion and image-based sexual abuse. As well, this study then examined how those variables influence how someone perceives online coercion, when relationship type and coercion tactic are altered. With a sample of 1467 university students (72% women; 74% heterosexual), higher psychopathy, sadism, or narcissism scores was associated with an increased likelihood of perpetrating image-based sexual abuse. For sexting coercion, identifying as a man, and higher narcissism scores were associated with an increased likelihood of perpetrating sexting coercion. Scoring higher in psychopathy, sadism, and narcissism were predictive of having a higher propensity to morally disengage. Examining coerciveness perceptions from the vignettes, being a woman and not having perpetrated sexting coercion were predictive of rating the vignettes more coercive and being higher in moral disengagement propensity was predictive of rating the vignettes less coercive. There was no interaction between relationship type and coercion tactic and no main effect for relationship type but was a main effect for coercion tactic. The threaten tactic was associated with a mean "Coercion" score 7.71 points higher than the hinting tactic. This study has implications regarding who may be more likely to perpetrate image-based sexual abuse or sexting coercion and what factors may influence perceptions of online coercion. This study also showed that the general aggression model appears to be a valid theory to explain image-based sexual abuse and sexting coercion perpetration.