The attack on Rembrandt's 'Danaë' took place at the renowned Hermitage Museum in St. Petersburg, Russia, where the painting was displayed as part of a collection of masterworks. On June 15, 1985, the perpetrator, eventually identified as a man struggling with severe mental health issues, approached the canvas and unleashed a destructive barrage, first by hurling sulfuric acid onto the surface, which caused immediate and devastating damage to the delicate layering of paint. Following this initial assault, he took out a knife and made two significant cuts to the canvas, further compromising the integrity of this valuable piece of art.

The incident prompted an immediate response from the museum staff and law enforcement, who managed to detain the attacker swiftly. The incident raised broader discussions regarding the security measures in place to protect artworks, particularly in public museums where large crowds are present. This unfortunate occurrence showcased the vulnerabilities faced by cultural institutions and led to a reevaluation of art conservation practices, as well as the safety protocols in museums internationally.

The aftermath of the attack saw conservationists and art restorers engage in extensive efforts to restore the piece, which had been a staple of Rembrandt's oeuvre, depicting the mythological tale of Danaë and her encounter with Zeus. The dialogue surrounding mental health and societal responsibility was also ignited, as discussions revolved around how to address the complexities of protecting art while considering the contributors' backgrounds.