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Recently, private security services have become increasingly needed by the public. The proposed scheme involves blockchain technology with a smart contract. When a private security company signs a contract with a client, they install an Internet of Things (IoTs) device in the client’s house and connect it with the IoT main controller, then, the IoT main controller connects to the security control center (SCC). Once there is an event triggered (e.g., a break-in or fire incident) by the IoTs device, the controller sends a message to the SCC. The SCC allocates a security guard (SG) to the incident scene immediately. After the task is accomplished, the SG sends a message to the SCC. All of these record the messages and events chained in the blockchain center. The proposed scheme makes security event records have the following characteristics: authenticated, traceable, and integral. The proposed scheme is proved by a security analysis with mutual authentication, traceability, integrity, and non-repudiation. The known attacks (e.g., man-in-the-middle attack, replay attack, forgery attack) are avoided by message encryption and a signing mechanism. Threat models in the communication phase can also be avoided. Finally, computation cost, communication performance, and comparison with related works are also discussed to prove its applicability. We also provide an arbitration mechanism, so that the proposed scheme can reduce disputes between private security companies and the client.

Področje zasebnega varovanja je urejeno z Zakonom o zasebnem varovanju (ZZasV, 2011), ki ureja pravice in dolžnosti različnih subjektov zasebnega varovanja. Ključni akter zasebnega varovanja so zasebni varnostniki. To so osebe, ki neposredno opravljajo naloge zasebnega varovanja in lahko pri svojem delu uporabljajo ukrepe, določene v ZZasV (2011). V magistrskem delu smo ugotavljali, kakšno mnenje imajo študenti Fakultete za varnostne vede o zasebnih varnostnikih in predvsem, kako se je to spremenilo od leta 2003 do 2017. V raziskavi iz leta 2003 (Nalla, Meško, Sotlar in Bodiroža, 2004) so obravnavana vprašanja o strokovnosti in naravi dela varnostnikov, ki smo jih uporabili tudi v naši raziskavi (2017) in tako pridobili podatke za primerjavo ugotovitev obeh raziskav. Za leto 2017 smo s preverjanjem hipotez ugotovili, da študenti FVV menijo, da varnostniki svojega dela ne opravljajo zelo profesionalno, da ni razlike v mnenju med študenti in študentkami ter da imajo študenti s pozitivnimi izkušnjami z varnostniki boljše mnenje o njih kot tisti z negativnimi izkušnjami. V primerjavi z letom 2003 študenti FVV v letu 2017 zasebne varnostnike vidijo kot enako profesionalne, na drugi strani pa se jim njihovo delo zdi bolj pomembno, koristno in zahtevno (»narava dela varnostnikov«). Mnenje o profesionalnosti varnostnikov se torej ni izboljšalo, medtem ko se je mnenje o naravi dela izboljšalo, sprememb splošnega mnenja o varnostnikih pa ni mogoče ugotoviti. Lahko trdimo le, da se splošno mnenje o varnostnikih ni poslabšalo. The field of private security is regulated by the Private Security Act (Zakon o zasebnem varovanju, 2011), which regulates the rights and duties of various private security entities. The key actors in private security are private security guards. A security guard is a person that performs private security assignments and is allowed to use measures laid down in the aforementioned Private Security Act. This master’s thesis wished to determine the opinions of students of the Faculty of Criminal Justice and Security about private security guards in Slovenia and how these opinions have changed from 2003 to 2017. A survey from 2003 (Nalla, Meško, Sotlar and Bodiroža, 2004) asked questions about security guards’ professionalism and the nature of their work. The same questions were used to obtain data for the present survey, which enabled excellent comparison between these two years. The key research findings of 2017 are: students of the Faculty of Criminal Justice and Security are of the opinion that private security guards are not very professional there is no difference of opinion between male and female students and students with positive experiences have a better opinion of security guards, compared to students with negative experiences. Students in the 2017 survey view the work of security guards to be just as professional as it was in 2003, but they assess their work as more important, useful and hard (“nature of work”) than they did in 2003. Given the two above-mentioned findings it cannot be concluded that the general opinion about private security guards has improved since 2003, nor can it be disproved. It can only be concluded that students' opinions of private security guards in Slovenia have not worsened.

Araştırmanın amacı çeşitli şirketlerle özel güvenlik görevlilerinin iş doyumu ve motivasyonlarıyla tükenmişlik düzeyleri arasındaki ilişkiyi belirleyerek bazı demografik değişkenler açısından iş doyumu, motivasyon ve tükenmişlik puanlarının farklılaşıp farklılaşmadığına bakmaktır. Araştırmaya 2011 yılı İstanbul İli'nde bulunan özel güvenlik şirketlerinden toplam altı şirket dâhil edilmiştir. 296 özel güvenlik görevlisine uygulanan anket ve ölçekler sadece gönüllü katılımcılara uygulanmıştır. Anketler özel güvenlik şirketlerinde görev alan yöneticilere dağıtılmak üzere teslim edilip, tamamlandıktan sonra araştırmacıya iade edilmiştir. Araştırmada verilerin toplanmasında Minnesota İş Doyumu Ölçeği, Motivasyon Geri Bildirim Anketi, Maslach Tükenmişlik Envanteri ve araştırmacı tarafından geliştirilen demografik bilgi formu kullanılmıştır. Özel güvenlik görevlilerinde iş tatmini ve motivasyon, iş tatmini ve tükenmişlik arasındaki ilişki test edilmiştir. Sonuçta tükenmişlik alt boyutlarından duygusal tükenme ile genel iş tatmini arasında negatif yönde anlamlı ilişki, motivasyon ölçeğinin alt boyutlarından olan fizyolojik ihtiyaçlar puanı ile genel iş tatmini puanı arasında pozitif yönde ilişki ve motivasyon alt boyutlarından olan kişisel bütünlük ihtiyacı ile kişisel başarı puanı arasında negatif yönde anlamlı ilişki tespit edilmiştir., The aim of this research is to look at the relationship between job satisfaction and burnout levels and motivation scores in terms of some demographic variables among private security guards.During the year of 2011, a total number of six companies in Istanbul agreed to join in this research. 296 security guards are volunteered to participate in the research-work. The survey papers and tests were distributed to the security guards and collect back from them after completion, by the managers of the companies. In order to collect the data for the research-work, The Demographic Questionnaire, Minnesota Job Satisfaction Scale, Motivation-Feedback-Survey, Maslach Burnout Inventory were used.In this research?work, to find out the relationship between job-satisfaction, motivation and burnout, the collected data of security guard were analysed.Relationships between job satisfaction and motivation and relationships between job satisfaction and burnout among private security forces were tested. In the subcategories of burnout, negative correlations between emotional burnout and general job satisfaction were found. In the subcategories of motivation scale, positive correlations were found between physiological needs and general job satisfaction score were found. In the subcategories of motivation, negative correlations between personal integrity points and personal achievement were found.