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Wyświetlanie 1-2 z 2
Tytuł:
Twitter and the US stock market: The influence of micro-bloggers on share prices
Autorzy:
Karl, Shutes
Karen, McGrath
Piotr, Lis
Robert, Riegler
Powiązania:
https://bibliotekanauki.pl/articles/557847.pdf
Data publikacji:
2016-09-30
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
Twitter
social network
social media
financial markets
event studies
information
Opis:
With the increased interest in social media over recent years, the role of information disseminated through avenues such as Twitter has become more widely perceived. This paper examines the mention of stocks on the US markets (NYSE and NASDAQ) by a number of financial micro-bloggers to establish whether their posts are reflected in price movements. The Twitter feeds are selected from syndicated and non-syndicated authors. A substantial number of tweets were linked to the price movements of the mentioned assets and an event study methodology was used to ascertain whether these mentions carry any significant information or whether they are merely noise.
Źródło:
Economics and Business Review; 2016, 2(16), 3; 57-77
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyberattacks on critical infrastructure: An economic perspective
Autorzy:
Lis, Piotr
Mendel, Jacob
Powiązania:
https://bibliotekanauki.pl/articles/557717.pdf
Data publikacji:
2019-06-28
Wydawca:
Uniwersytet Ekonomiczny w Poznaniu
Tematy:
critical infrastructure
economics of cybersecurity
blockchain
globalized
economy
smart grid
Opis:
The aim of this article is to analyze the economic aspects of cybersecurity of critical infrastructure defined as physical or virtual systems and assets that are vital to a country’s functioning and whose incapacitation or destruction would have a debilitating impact on national, economic, military and public security. The functioning of modern states, firms and individuals increasingly relies on digital or cyber technologies and this trend has also materialized in various facets of critical infrastructure. Critical infrastructure presents a new cybersecurity area of attacks and threats that requires the attention of regulators and service providers. Deploying critical infrastructure systems without suitable cybersecurity might make them vulnerable to intrinsic failures or malicious attacks and result in serious negative consequences. In this article a fuller view of costs and losses associated with cyberattacks that includes both private and external (social) costs is proposed. An application of the cost-benefit analysis or the Return on Security Investment (ROSI) indicator is presented to evaluate the worthiness of cybersecurity efforts and analyze the costs associated with some major cyberattacks in recent years. The “Identify, Protect, Detect, Respond and Recover” (IPDRR) framework of organizing cybersecurity efforts is also proposed as well as an illustration as to how the blockchain technology could be utilized to improve security and efficiency within a critical infrastructure.
Źródło:
Economics and Business Review; 2019, 5 (19), 2
2392-1641
Pojawia się w:
Economics and Business Review
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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