"In the long haul our safety as a nation may depend upon our achieving 'space superiority'. Several decades from now the important battles may not be sea battles or air battles, but space battles, and we should be spending a certain fraction of our national resources to insure that we do not lag in obtaining space supremacy." - Gen Bernard Schriever Speech Full Text

On July 9th 1962 a 1.54 megaton nuclear weapon was launched from Johnston Atoll and detonated at 400km altitude. The high energy particles created artificial radiation belts that led to spectacular aurora visible of on the opposite hemisphere and caused the premature failure of 9 artificial satellites.

The Test Ban Treaty of 1963 prohibits nuclear weapons tests "or any other nuclear explosion" in the atmosphere, in outer space, and under water.
Full Text

In Late 1968 two russian Satellite Hunter satellites Cosmos 249 and Cosmos 252 were launched and maneuvered in attempts to destroy Cosmos 248 ASAT target satellite which was already on orbit by self destructing in proximity. Cosmos 252 succeeded in blowing up Cosmos 248 on Nov 1, 1968

Three Russian military space stations code-named Almaz ("diamond") were each outfitted with R-23M cannons on the exterior of the space stations. The R-23M was derived from a 23mm anti-aircraft cannon that was used on the Tupolev Tu-22 Blinder supersonic bomber. The system was test fired on Jan. 24, 1975, firing 20 rounds of ammunition while the station was unmanned

In 1976 another russian Satellite Hunter satellites cosmos 880 was launched and maneuvered near Cosmos 880 target satellite which was already on orbit and destroyed it by self destructing in proximity.

President Reagan's Strategic Defense Initiative led to the design of High Frontier a concept of orbiting missile defense satellites capable of firing missiles and laser from space to intercept and destroy ICBMs

On Friday September 13th 1985 pilot Maj Doug Pearson fired a missile from his F15 Eagle and blew up the aging Sol-wind satellite in an Anti-Satellite (ASAT) test.

In May of 1992 the space shuttle crew of STS-49 performed RPO with the INTELSAT VI (F-3) satellite, which had failed made a GTO insertion burn and was left stranded in unusable LEO orbit since it's launch in 1990. Astronauts matched the orbit and rotation of the satellite with the space shuttle and grappled it by hand during an EVA and attached a live rocket motor which successfully boosted the satellite into usable orbit at GEO.

Japanese unmanned laboratoy "Space Flyer Unit" contained experiments valuable to NASA and American organizations and corporations. It contained some material engineering related experiments, and one biology-related (hatching an egg). Retrieval of products of the experiments was required and recovery required detachment of the solar panels to stow the payload on the shuttle for reentry.

The Director of the US National Reconnaissance Office Donald Kerr confirmed a Chinese laser had illuminated a US satellite in 2006.
Source: U.S. Congress - USCC Report - "AN ASSESSMENT OF CHINA’S ANTI-SATELLITE AND SPACE WARFARE PROGRAMS POLICIES AND DOCTRINES"

On January 11, 2007 China shot a missile with an infrared interceptor to destroy satellite Fengyun 1C. This created a tremendous amount of debris. One fragment went on to destroy another satellite BLITS in 2013 raising concerns that Kessler syndrome occur sooner than predicted.

"In December 2007, the Missile Defense Agency (MDA) assembled a specialized team of experts that successfully responded to President George W. Bush's order to destroy a malfunctioning U.S. satellite (designated U.S.A.-193) before it crashed to Earth and released a cloud of toxic hydrazine gas that could threaten human life."... "on February 20, 2008, the extraordinary efforts of the Operation BURNT FROST team were realized when the USS Lake Erie acquired the satellite, launched the interceptor, and eliminated the threat."
Source: "Missile Defense Agency - 2010 Technology Achievement Award - Presented to Burnt Frost Team

"At least two U.S. government satellites have each experienced at least two separate instances of interference apparently consistent with cyber activities against their command and control systems:
• On October 20, 2007, Landsat-7, a U.S. earth observation satellite jointly managed by the National Aeronautics and Space Administration and the U.S. Geological Survey, experienced 12 or more minutes of interference. This interference was only discovered following a similar event in July 2008 (see below).†
• On June 20, 2008, Terra EOS [earth observation system] AM–1, a National Aeronautics and Space Administration-managed program for earth observation, experienced two or more minutes of interference.‡ The responsible party achieved all steps required to command the satellite but did not issue commands.
• On July 23, 2008, Landsat-7 experienced 12 or more minutes of interference. The responsible party did not achieve all steps required to command the satellite.
• On October 22, 2008, Terra EOS AM–1 experienced nine or more minutes of interference. The responsible party achieved all steps required to command the satellite but did not issue commands.
... access to a satellite’s controls could allow an attacker to damage or destroy the satellite. The attacker could also deny or degrade as well as forge or otherwise manipulate the satellite’s transmission. A high level of access could reveal the satellite’s capabilities or information, such as imagery, gained through its sensors."

On February 10th 2009, at an altitude of 790km, Iridium 33 and Cosmos 2251 collided at perpendicular trajectories creating over 1,800 tracked pieces of debris. NASA Report
Lessons Learned

"Russia has a co-orbital anti-satellite weapon he referred to as a “nesting doll satellite” that “is specifically designed to kill U.S. satellites.”" Gen Raymond (Chief of Space Operations, United States Space Force)
Source: af.mil - secretary of public affairs - article

On April 2nd 2018 the RemoveDEBRIS satellite and its targets were launched to the ISS on a SpaceX CRS-14. Satellites were deployed from the ISS later on June 20 2018. The target cubesat DS-1 was ejected at low velocity and an attached balloon was inflated to provide a larger target area. When DS-1 was 7 meters away the primary satellite launched a net that was built by Airbus DS successfully ensnaring the satellite and accelerating it's reentry into earth's atmosphere.

On April 2nd 2018 the RemoveDEBRIS satellite and its targets were launched to the ISS on a SpaceX CRS-14. Satellites were deployed from the ISS later on June 20 2018. The target cubesat DS-1 was ejected at low velocity and an attached balloon was inflated to provide a larger target area. When DS-1 was 7 meters away the primary satellite launched a net that was built by Airbus DS successfully ensnaring the satellite and accelerating it's reentry into earth's atmosphere.

On March 27th 2019 the Defense Research and Development Organization (DRDO) in India successfully blew up a target satellite at an altitude of 283km in an ASAT missile test/demonstration. In 2016 the Indian prime minister gave a go ahead for the ASAT test. Objective was to intercept a satellite in low LEO orbit to reduce risk to other space assets. A target satellite was launched into an orbit under 300km about 2 months earlier in January 2019.

In May 2021 damage was discovered on the Canada arm of the International Space Station (ISS). It had been completely penetrated by a piece of untracked space debris. Luckily the robotic arm is still operational and the pressurized modules of the ISS were not impacted.

"Russia tested a direct-ascent anti-satellite (DA-ASAT) missile on Nov. 15, 2021, Moscow Standard Time, that struck a Russian satellite [COSMOS 1408] and created a debris field in low-Earth orbit. The test so far has generated more than 1,500 pieces of trackable orbital debris"
“Russia has demonstrated a deliberate disregard for the security, safety, stability, and long-term sustainability of the space domain for all nations,” said U.S. Army Gen. James Dickinson, U.S. Space Command commander. “The debris created by Russia's DA-ASAT will continue to pose a threat to activities in outer space for years to come, putting satellites and space missions at risk, as well as forcing more collision avoidance maneuvers.”
Source: Space Command - Public Affairs

Commercial Space Domain Awareness (SDA) company ExoAnalytic Solutions routinely monitors the geo-belt with a global network of optical telescopes. They observed what they assess to be a forced reorbit of Compass G2 into the GEO Graveyard by SJ-21

"On 24 February 2022, a multifaceted and deliberate cyber-attack against Viasat’s KA-SAT network resulted in a partial interruption of KA-SAT’s consumer-oriented satellite broadband service. While most users were unaffected by the incident, the cyber-attack did impact several thousand customers located in Ukraine and tens of thousands of other fixed broadband customers across Europe. This incident was localized to a single consumer-oriented partition of the KA-SAT network that is operated on Viasat’s behalf by a Eutelsat subsidiary, Skylogic... The residential broadband modems affected use the “Tooway” service brand. This cyber-attack did not impact Viasat’s directly managed mobility or government users on the KA-SAT satellite. Similarly, the cyber-attack did not affect users on other Viasat networks worldwide."
Source: Viasat cyber attack incident report