On Friday, December 14, 2012, Lenny Pozner's six-year-old-son Noah became the youngest victim of the Sandy Hook massacre when a lone gunman entered the school in Newtown, Connecticut and opened fire, killing twenty grade one children and six educators before shooting himself dead.

[3] Almost immediately after the shooting, conspiracy theorists began claiming that the event was staged by the US government in order to generate sympathy and justification for a drastic ban on guns and a weakening of the Second Amendment.

[6]  Less than a month after the shooting, Noah's mother, Veronique de la Rosa and her brother, attorney Alexis Haller spoke out in the media advocating gun control.

[4] The HONR Network's initial aims were to protect survivors and the families of victim of mass casualty events like Sandy Hook, who were being harassed, defamed, tormented, threatened, and intimidated online by hoaxers and hate groups.

[5] HONR has also assisted social media platforms in creating policies designed to better protect victims of mass casualty and highly publicized, violent incidents.

[4] The organization also works to provide education about online rights and responsibilities and assist social media platforms to craft impactful policy to make the internet a safer place.

[15][5] HONR volunteers report harassment, including posts with unauthorized photos, to social media platforms and online service providers, often citing invasion of privacy, bullying, hate speech, and copyright infringement.

[16] On July 25, 2018, Lenny Pozner and his former spouse Veronique de la Rosa published an open letter to Mark Zuckerberg in The Guardian that criticized Facebook's failures to protect victims of harassment on the platform.

In an official blog post, it announced that it would prohibit and remove videos denying that well-documented, violent events like the Holocaust or the shooting at Sandy Hook Elementary, had taken place.

"[19] While most other major platforms have responded to requests for greater protection for survivors and the families of victims of mass casualty and high-profile violence, Twitter has continued to reject or ignore Pozner's and the HONR Network's appeals.