Blake Lively has been targeted with a massive troll campaign amid her legal war with Justin Baldoni … her Instagram profile is flooded with porn.

A source with knowledge tells TMZ … Blake had no idea she had been targeted with the smut … and it’s now gone — her security settings have been updated.

Daniel Roberts, Meta spokesperson, tells us … “This kind of online harassment is wrong and we condemn it. We are removing the content that violates our policies and will continue to monitor for additional violating posts.”

It’s hard to know who started the porn posts – or exactly when, but they began at some point this month … hardly a coincidence amid her polarizing legal battle with Justin … the public taking sides. Worth noting Ryan’s IG was not messed with.

The dozens and dozens of porn posts went under the radar ‘cause they were under the “tagged” section of the app. That’s where anyone – even stars – can be tagged in a photo and it appears in their profile … unless specific settings are in place. Seems Blake with her 45 million followers didn’t have those settings on – but, she hasn’t needed them until now.

As you know … Blake filed a lawsuit against Justin last month — claiming he sexually harassed her on the set of “It Ends With Us” and then tried to ruin her reputation.

Baldoni has fired back at the claims, calling them totally untrue … before filing his own lawsuit against the Hollywood power couple — asking a judge to award him $400 million. He’s also suing the New York Times for a piece they ran after Lively filed her suit.

Darrell Feller, a retired U.S. Army National Guard pilot, is weighing in on the possible causes behind the tragic D.C. aircraft collision … sharing how a number of factors could’ve been at play.

We caught up with Darrell on “TMZ Live” in the aftermath of Wednesday night’s tragedy, and he explained how it was entirely possible the Army Black Hawk helicopter, which crashed into a regional jet carrying 64 people, didn’t even see the aircraft coming.

Darrell says the particular route the chopper took is known for causing “confusion with ground light,” due to the light from surrounding structures, buildings and other aircraft.

Darrell said this particular route, combined with the assigned runway, is known as the “most dangerous spot” … which means an incident is most likely to occur there — as it did this week.

While the route has been shut down by the FAA following the collision, Darrell made a case for its existence … explaining it allows Air Traffic Control a clear way to move aircraft in and out of congested airspace.

Darrell said something will have to be done about the danger zone … but shared it’s unclear if that means closing the tricky runway, or creating a new routing system entirely.

There’s currently a federal investigation into the cause of the collision … which left no survivors.

Tristan Thompson is facing some heat for referring to ex-girlfriend Khloe Kardashian‘s niece Dream as his “oldest daughter” … especially from the little one’s mama, Blac Chyna.

ICYMI … the NBA player caught some flak on social media after he filmed himself sending love to his “2 daughters,” Dream Kardashian and True Thompson.

Many online felt it was inappropriate of Tristan to claim Rob Kardashian‘s daughter as his own, especially since he isn’t blood-related to the 8-year-old, and is NOT dating Dream’s aunt.

She wrote on Instagram … “Dream has one mother, Angela White, and one father, Robert Kardashian. I usually don’t speak up, but I’m done. Stop all this clout chasing involving my daughter.”

Chyna made it clear there was no reason for Tristan to lay claim to Dream, as she and Rob are active parents in Dream’s life.

She added … “We also have a beautiful, healthy co-parenting relationship.”

Tristan has 3 other biological children he could be focusing on … including son Prince, who he shares with ex Jordan Craig … son Theo, who he shares with model Maralee Nichols … and son Tatum, who he shares with True’s mom Khloe.

But it’s no secret Dream has an incredibly close bond with Khloe and True, regularly spending time at “The Kardashians” star’s home for sleepovers and other family bonding moments … and it isn’t the first time someone in their family has overstepped in describing their relationship

Khloe famously put her foot in her mouth when she referred to herself as Dream’s “third parent” on a 2023 episode of “The Kardashians” … sparking a similar backlash to Tristan’s.

Khloe later backtracked her remark on Instagram, explaining she considers “all of my nieces and nephews my babies” as she believes it takes a village to raise kids.

Though, given Chyna’s complicated history with the Kardashian-Jenner family, it may be safer to stick to their actual “aunt” and “uncle” titles moving forward.