The Ultimate Sacrifice for Cyber Security

"Never dwell on fame and fortune; Focus instead on duties and obligations." This was Liu Yabin's motto before his death， and it also serves as a timely reminder of how a civil police officer should conduct himself in the modern era. The motto is now inscribed on a memorial portrait of Liu hung on the wall of the fourth floor of the office building where he worked. In the portrait he wears a neat police uniform， with many medals pinned to his chest as symbols of his heroic deeds.

Over a 16-year career， Liu was part of many emotional missions， leaving many touching yet untold stories. The oath he swore to the police carried his firm determination. Every action he took was in relentless pursuit of his dream. He was， and his memory continues to be， proof of a police officer's ideal assets： loyalty， commitment， and bravery. Liu went from being a teacher to a police officer， and from a regular worker to a seasoned professional; along the way he never swayed from his strong convictions. He threw himself into dangerous situations without hesitation， never deterred by arduous tasks. He worked hard around the clock without any grumbling. He reached out to help people in trouble， without asking for anything in return.

"Nothing is impossible in his eyes. He can always crack a case no matter how tough it is."

Liu may have passed away but his work area has been kept just as he left it.  His desk still lies spotlessly clean in his office， with an open notebook resting on top， just as it did when he was alive. A simple foldable bed stands stubbornly in the corner. An opened box of pills for treating high blood pressure rests beside two computers， which bore witnesses to his assiduous work，  have gone black now. A dozen neatly handwritten words are visible on Liu's notebook： "May 6， Friday， sunny. 8：45， plenary meeting…"

Inside his filing cabinet are a stack of 29 thick notebooks brimming with records of his routine work， case investigations， criminal suspect information， and his experiences.

Liu started his career as a police officer in January 2006 at a police station under the Canal District Branch. He wrote down what he saw and experienced during a campaign that the station launched to bust pyramid selling cases. These writings proved conducive to his later work.

In 2007， he was transfered to the criminal police brigade of the Canal District Branch， where combatting pickpockets was one of his major duties. "His diligent footprints cover every corner of the city， from bus stops and hospitals， to shopping malls and restaurants，" one of his colleagues says. "He put down his detailed thoughts about every case he handled in his notebooks."

Over time， his notebooks piled up one on top of another， and his anti-pickpocketing work grew increasingly effective. No matter where a pickpocketing crime took place across the city， he was able to find the suspect in no time. Even criminals who had been at large for years were finally brought to justice by Liu. His efforts were rewarded with a steep drop in pickpocketing cases in his jurisdiction.

"If you stick it out， there will be the fruit." Wang Hui， deputy chief of the criminal police brigade of the Canal District Branch， recalls of Liu. "He likes to think deeply and analyze， and is always able to improve practice of real-life operations."

One day in 2011 on his way to work， he noticed many people from outside of the Hebei province distributing used-car business cards to passersby. With the scene in mind， he searched the internet for leads and found many fraud cases involving suggest advertisements had occurred in other places. Liu worked out what these non-locals were up to and quickly ascertained their personal information. A dozen days later， a related fraud crime emerged in Cangzhou， just as Liu suspected it would. Since he had the suspects' backgrounds at his fingertips， the case was cracked immediately， saving much time and energy.

"Nothing is impossible in his eyes. He can always crack a case no matter how tough it is." Zhang Yadong， director of the political office of the Canal District Branch， recalls.

In 2012， the Canal District Branch received a number of reports from staff at automobile rental firms， who claimed fraudsters had rented their cars before reselling and mortgaging them or using them for crimes. Liu thought it would be useful for future investigations to collect information about these cars. Shortly afterwards， based on his collected information， he noticed that a rented car was being used to transport a piece of stolen redwood furniture. Following the lead， Liu succeeded in uncovering the criminals' hideout and arresting the suspects as they returned from another robbery. Not long after the local police had received the report of the theft case， they got a call from Liu： "We have just seized a gang of thieves and cracked the case of the stolen redwood furniture." The officer on the other end of the phone line was surprised： "Incredible！ We had hardly even received the report when you had already cracked the case."

In 2014， Liu was tasked with solving a cyber investment scam. With a heap of materials to scrutinize， he worked around and against the clock for many days and eventually got to the bottom of the case.